author

CPUDOCTHE1.

Inbox View Profile
148Comments

Tell us about yourself!

Achievements

100+ Comments Earned a bronze medal
  • The Bolt! - an Electric Go Kart Homeschool STEM Project

    That is a great build. I always find liquid fuel sources are better for kids toys. With electric, they can be having a great time, then the battery dies. Then the long wait while it charges. And then they are sad. With a liquid fueled toy, you can just dump more diesel or gasoline in it and the kids are happy again.

    View Instructable »
  • Home Built 4x8ft CNC Plasma Metal Cutting System

    I would say around $7000, which included $2000 HyperTherm 45, $2500 CandCNC controls and motors, and a $700 machine torch. The rotary capability added about $600. We used (4) 24' pieces of 2x3 rectangular tubing for the frame.

    View Instructable »
  • Home Built 4x8ft CNC Plasma Metal Cutting System

    Good description. We built a 4x8 plasma table a couple of years ago. We only have a HyperTherm 45. If we need to cut thicker, we have an oxy/acetylene machine torch to put on it. We also mounted a chuck that can turn up to 6" tubing/pipe so we can CNC cut it too. We enclosed the electronics in a box about 20x20x20 and have two 150 cfm fans pulling air through a 1970s Ford air cleaner for a 460 cid engine. We also used the CandCNC controls and stepper motors.

    View Instructable »
  • DIY CO2 LASER: R-LASER 6020

    I didn't really see anything about wiring up the laser. Do the power supply and laser come with instructions or do I just start hooking up wires until it works? The mechanical stuff is easy.

    View Instructable »
  • Shop Cheats: Welder's Brake

    We use SheetCam. I draw in LibraCad. My son draws in Fusion 360. We just draw line segments where we want to cut and SheetCam takes care of the rest. I wish Fusion 360 ran on Ubuntu too. Fusion 360 is hard to beat for complex projects. He built a drive over auger last spring and a just completed a 7' (that would be 2,133.6 mm for you guys that have not landed a human on the moon) rotary cutter for his skid steer. Saved about $10,000 each on those two items. He has a buddy that is an ag engineer that is designing a grapple with tree shear. Hopefully the two of them will work out the kinks and we will start building it soon.

    View Instructable »
  • Spring Making / Wire Bending Machine

    I have a B.S. in Chemistry. I have used the metric system a lot. The U.S.A. has not converted to the metric system and there is no need to.

    View Instructable »
  • Spring Making / Wire Bending Machine

    An inch has only been defined relative to the meter since 1959 and existed long before that. You still don't need the metric system unless you are a liberal or communist or count on your fingers.

    View Instructable »
  • Spring Making / Wire Bending Machine

    1/10,000,000 of the distance between the equator and north pole or the length of a bar of metal that some French guy cut is not a good start for a measuring system either.

    I am sure he would not want to work for you anyhow, but thanks anyway.

    View Instructable »
  • Low Cost DIY CNC Router

    That is a cool router. My son is wanting to make a cnc router/mill but I don't really have any place to put it. We built a 4'x9' CNC Plasma table a couple of years ago. Learned a lot from building it. We discussed using an Arduino, but purchased a commercial control box.

    View Instructable »
  • Plywood Reindeer

    Those look nice. We made a bunch of them 30 years or so (used English measurements) ago and sold them.

    View Instructable »
  • Arduino Bandsaw Speedometer

    You can get VFDs that run off of 110V or 220V single phase for the smaller motors, 2 hp or so. We only have single phase in our area. We have a rotary 3 phase convert that runs the mills, and a 3 phase 220 volt VFD for the 2 hp lathe speed control that runs off of the rotary phase converter and a 110V 3 phase converter for the 1 hp lathe. The 220V input VFD will run off of 220V single phase and will run up to a 4 hp motor.

    View Instructable »
  • Microwave Corn on the Cob - No Shucking No Silks No Fuss

    I always husk my corn before cooking it t remove the worm. If you get corn without a worm, you know some highly toxic chemicals were used on the corn to keep the worms away. I like wrapping it in foil and cooking it on the grill. You can caramelize some of the sugar in the corn and it makes a visual and culinary treat.

    View Instructable »
  • Make Your Own Tools

    We usually have a need for more robust tools that what can be made from plastic. We cut them out of steel on the CNC Plasma table. My son was working on his buddy's track hoe. They had to install the nut on the end of a hydraulic cylinder. The nut was like 2" and required a 3 7/16" wrench. No one had a wrench that size in their tool kit. He called me. I started designing the wrench. When he got here, I had it designed. We did not have any heavy steel plate, so we cut 4 out of 1/4" steel and he laminated them to make a 1" thick wrench. The specs called for 600 ft lbs of torque for tightening the nut. From what I calculated with two 200+ lb guys hanging on the end of a cheater bar, they got it over 1400 ft lbs and the wrench held up.

    View Instructable »
  • Arduino Bandsaw Speedometer

    Actually a 3 phase motor with VFD is probably cheaper and much more robust. You can get VFDs from less than $100 US to several thousands of dollars US depending upon current capacity.

    View Instructable »
  • Triangular to Square Tap Adapter

    I am thinking that the tap slipping in the chuck is good when you hit a hard spot, fill the tap with chips, or something else happens. With small taps, I take the belt off of the drill press and turn it by hand. With larger taps, we power tap in the mill or drill press.

    View Instructable »
  • Spring Making / Wire Bending Machine

    That is cool. I was going to build one and then I saw the dimensions were metric. My son has convinced me that there is no need to build anything with metric dimensions.

    View Instructable »
  • DIY 1-Hour Workbench / Outfeed Table

    My son recently built a new reloading table. The old one was similar to what you built. The new one has 4x4 legs and stringers. For a top, he used a 74"x38" butcher block counter top. It has inlaid t-tracks to mount various components. He cut out 1/4" steel plates to attach the top to the legs and stringers. It is solid. If a tornado attacks, I am crawling under the table.

    View Instructable »
  • My guess would be that the pesticides would stay on the outside of the corn husks.

    View Instructable »
  • They came from amazon. There were just $9.99 and only have a pigtail that was about 18" long. They do not sell them any more. Like 50 watt is the lowest wattage that I see now. I wanted a lot of fixtures to minimize shadows. They were GLORIOUS-LITE. I see a similar festnight 10 watt for less than $9 now

    View Instructable »
  • I had thought about doing that but went with 10 w indoor/outdoor LED fixtures. They were $10 each and I have about 10 in the shop plus the 4' fluorescent fixtures (about 1/2) that would take the led tubes. Where I live, I didn't have to get any permits or inspections to build my house or shop.

    View Instructable »
  • I ALWAYS grill steaks. Then you don't have to add flavourings since God and Mr. Angus did a GREAT job of designing beef.

    View Instructable »
  • That is a nice looking build. I have thought about building something similar or just sleeves that go over taps to hold them perpendicular. The last big tap job was 21 holes each in two pieces of 1/4"x2"x108" cold rolled steel for 10-24 bolts. I drilled each hole in the drill press, slipped off the drive belt, put the tap in the chuck and then turned the spindle by hand to tap the hole. The tap lined up exactly with the drilled hole that way. It was kind of slow but worked.

    View Instructable »
  • CPUDOCTHE1. commented on jtaggard's instructable Modular DIY CNC V2

    My son and I built a CNC Plasma table a few years back. We used NEMA 23 motors for the drives. It is direct drive on gear racks. It has 1/800 inch resolution(sorry to you guys that didn't land a man on the moon, you will have to convert to what ever measuring units you still use). It is 4 ft x 9 ft. The gantry is about 50 lbs. The whole thing without water is over 1000 lbs. With the weight it has to move, belts would not work. Belts give good enough accuracy when you are moving a light mass. Printers and plotters have good accuracy using the belts. Lead screws are not an option in dirty environments and with proper maintenance can have very little backlash. We use gear racks.

    View Instructable »
  • I didn't look at your design, but from the comments it appears that there are several failures in it. I was wanting to make a variable speed reversible drive for something and found a couple of boards that can just be connected together to drive the stepper motor and they cost less than $20 per set. I think the stepper motor, power supply, and all was less than $50.

    View Instructable »
  • CPUDOCTHE1. commented on TheTNR's instructable TRIPLE CNC MACHINE

    That is a cute machine. I have been thinking about building a CNC router, but I don't work with wood much any more. I did look for a blue laser and a quick search showed them ALL over $100. We did build a 4'x9' (you guys without a flag on the moon will have to whip out a calculator to figure out how big that is) CNC plasma cutter.

    View Instructable »
  • He clearly stated a 12 V 5 amp supply. You could use something like a notebook power supply or probably the best bet is a variable voltage bench power supply. We bought one that goes up to 30 V and 10 amp for about $70 to anodize aluminum. You can get 5 amp supplies for a lot less. Using 120V would be dangerous since if you got across the two ends of the wire, you would be hooked to 120 V.

    View Instructable »
  • That looks like it would be unstable to me. I have my vise mounted on a 30"x60" table and when we bend 1/2" or larger steel rod cold, one of us has to sit or stand on the opposite corner of the table to keep it from shifting around.

    View Instructable »
  • I don't think you need a hole in the bottom. If you want soil bacteria in there, sprinkle a handful of soil in the bucket. Also, when it rains, some bacteria may get washed in through the holes in the side.

    View Instructable »
  • Follow the lines from the compressor. The high pressure line will go towards the coolant radiator. The low pressure line will go to the passenger compartment.

    View Instructable »
  • Sure. You could get a led strip with the remote control and power supply. You could use the remote to turn it on and off. Or you could just use a power supply and leave it on for a night light or mood lighting.

    View Instructable »
  • I don't know a lot about aluminum, but we tried to bend some 6160 (we usually use 6160 to make non-steel things) and it just cracked. After some checking, we found out that it is hardened.

    I would think that leather would burn in this situation. If you don't have soft or smooth jaws, you can lay either aluminum (soft) or steel (smooth) angle iron in the jaws for a quick solution.

    A propane torch probably does not make enough heat. Mapp should work, but I have never used Mapp. If you insist on propane, heat the metal when it is not in the vise (so the vise will not conduct heat from the metal, quickly clamp it in the vise and then bend it before it gets cool.

    View Instructable »
  • I always use the grill. It adds a little smoke flavor to the meat. I tried the smoker once, but the extra smoke did not justify the extra time required. I set the grill to about 300 deg F, put the ribs bone side down for 45 minutes, flip it to meat side down for 30 minutes, then wrap it in foil meat side up and cook another 1 to 2 hours until done. I use the Weber KC Rib Rub. A little makes it good, more makes it pretty spicy.

    View Instructable »
  • It is always the little things that a person seems to forget. My son and I built a 4' by 9' (you guys that didn't land a man on the moon will have to find an online converter to convert feet to that metric stuff) CNC plasma table. We spent close to a year designing it and modifying it. We have a swing out arm that holds the monitor and keyboard. We carefully cut, bent, and welded the keyboard tray. It even has a USB port and an override switch. We installed it on the arm and welded the monitor mount to the top. He grabbed his beer from off the welder and looked at me and said "There is no $%^&*() beer holder". We still don't have a beer holder because without redoing the whole keyboard tray, I think it would just look mickey moused on there.

    View Instructable »
  • This is so cool. I will have to make some. I loves my tactical stuffs. It is always black and the expectations far exceed the capabilities. I even loves the First Tactical President, Obama.

    View Instructable »
  • True, PSI, CFM, CFS, CFH are not international units of measure bur ARE good enough to land a man on the moon. Just because the rest of the world will not conform does not mean that WE need to change.

    View Instructable »
  • Move to a "Free State". When I built my house, I did not have to have any permits or inspections.

    View Instructable »
  • That is a cool idea. I like flap disks to remove rust. It leaves a nice finish and can remove heavy rust. That looked like a lot of work to cut them all out. I thought my son was wasting my time when we built a 4'x9' CNC plasma table, but it saves a lot of work when you need a bunch of identical parts cut out of metal.

    View Instructable »
  • You must be from "down under". I knew that water swirled backwards in toilets down there and I guess clamps get installed backwards too. My floor standing drill press goes down to 80 rpm. It prolongs drill bit life. I use Rapid Tap for steel and WD-40 for aluminum. Give me slow and a lot of force any day.

    Not really "required" but helps promote longer drill and drill bit life, makes a better hole and prevents the metal from getting as hot.

    View Instructable »
  • NO. Nails designed for wood are LOW CARBON, which can NOT be hardened. If you want to harden a nail, you need carbon steel nails. Concrete nails (MUCH different than cement nails) are carbon steel and can be hardened.

    Can't you just go to a yard sale, buy a phillips screw driver for $0.25 and sharpen a point on it with a grinder?

    View Instructable »
  • When my son and I built his CNC plasma table, I thought things like this would be a good use. Draw up something, and cut it out. BOOM, DONE. Works great.

    View Instructable »
  • Cool build. We used to call similar a shagging shack.

    View Instructable »
  • I built an audio amp once. It operated off of 12 V and was used to call in varmints. We built it in the shed. It was quite loud, so we set the speakers outside and was playing a dying rabbit or similar sound. The dog that was running around the yard attacked the speakers so it set us back a little to get new speakers. They were waterproof marine speakers if I recall correctly.

    View Instructable »
  • You can follow a VERY simple procedure to not get electrocuted. Turn off power at the pole. Plug cable into receptacle and generator. Power up generator. I have a 220V 50A NEMA 14-50 plug outside my shop. The generator/welder has a 50A fused receptacle along with the 50 amp breaker for the 14-50. No fires or electrocution unless you previously were a candidate for a Darwin award.

    View Instructable »
  • I have used a hand drill to drill glass too, but the lathe spins slower and is much more rigid/exact/repeatable

    View Instructable »
  • I never have used a sander to sharpen a pencil since I don't have a belt or disc sander, but I have used a bench grinder to sharpen pencils and soap stone. I have used a metal lathe to drill holes in glass blocks. It would turn slower than the drill presses (didn't have the mills at the time) by chucking the bit in the lathe chuck and using a push block on the tail stock.

    View Instructable »
  • I would have opted for the NEMA 17 motors. My son and I built a 4'x9' CNC plasma table. In the design, NEMA 17 motors where plenty sufficient. We opted for the next size larger motors. With the upgrades, they come in handy.

    View Instructable »
  • CPUDOCTHE1. commented on mikeasaurus's instructable Smoked Almonds

    The biggest tip is to make sure spiders have not built a web in the venturi. I fired my smoker up one time, all was good, checked the meat about 30 minutes later, and the venturi had gotten blocked and it carboned up the meat. Also, keep water in the water pan.

    View Instructable »
  • CPUDOCTHE1. commented on JON-A-TRON's instructable Flip-Top CNC Table

    You couldn't just leave the top on and slide a piece of wood into the CNC? I have never tried it, but it seems better to just leave the top in place.

    That would be more "tainted by metric" than not using the metric system. Either system will work. The U.S.A. has clearly decided to go non-metric and if you want to trade with the U.S.A. you too will be non-metric.

    View Instructable »
  • CPUDOCTHE1. commented on JON-A-TRON's instructable Flip-Top CNC Table

    I think I would have just mounted the CNC what ever under the work bench. My son and I built him a 4'x9' (those still stuck in the metric may need to know that there are 2.54 cm per inch and 12 inches per foot) that is work bench high (30 some inches). The next one we build will be able to handle a 5'x10' piece of steel and be about 12" off of the ground. It is a little rough for an old guy and his son to get a 600 lb+ (2.2 lbs/ kg) piece of 1/2"x48"x96" steel that far off of the ground.

    View Instructable »
  • My oldest son has bee using it. He even switched from Ubuntu to Windows so he could run it. He designs things in 3d, but it is great at making the 2d cut paths for a CNC Plasma Table. The best thing, is that it can tell what the weight of the finished product will be. One that he is currently building is a little over 3000 lbs and the other he has been able to trim down to just under 1000 lbs. I would be happier if he could get it down around 700 lbs.

    View Instructable »
  • CPUDOCTHE1. commented on nicengineering's instructable Low Budget CNC

    That is cool. It is great to build something like that and see it work. My son and I built a 48"x108" (some of you will have to convert that ((25.4mm per inch)) CNC Plasma table. We have been using it almost 2 years and I am still amazed at the quality it can do and its speed. It was pretty much a budget build and only cost about 1/3 as much as a commercial unit. I hope you enjoy using yours.

    View Instructable »
  • We have a brake that fits in a press. It will bend 19" of 1/8" and 5" of 3/8" with the factory angle iron base. We have made inserts to make tighter radii so we can't bend that heavy of material with a tight radius. When we cut parts out that need bent, we just cut line segments on the CNC Plasma table which makes it much easier to bend.

    View Instructable »
  • That is a cool build. My son and I built a 4'x9' CNC plasma table. We have steel hardware connecting extruded aluminum to steel and have no problems. The frame and legs are 11 gauge 2"x3" steel. We have to use a skid steer to move it around.

    View Instructable »
  • My son and I built a 4'x9' CNC Plasma table. For you stuck in the metric system, there are 25.4 mm per inch and 12 inches per foot so you can convert to metric if you want to get a feel for the size. I have thought that a laser cutter would be fun, but a laser to cut useful things is quite expensive.

    View Instructable »
  • About the only think we use WD-40 for is to lubricate the horizontal band saw and some light drilling on the drill press. Obviously if you really need a penetrating oil, you would use Kroil. If you need to lubricate something and don't mind it getting sticky and binding up soon, WD-40 is a good choice.

    View Instructable »
  • Caution: The link to the plans is a scam to spam your email. I guess there is not much that you really get for free now.

    View Instructable »
  • CPUDOCTHE1. commented on Pricklysauce's instructable Vehicle Key Safe

    You might as well just zip tie the key to a hidden part of the vehicle. Those types of combination locks can be picked in about twice the time it takes to open them if you have the combination. I would think most people would be more likely to pick that lock than have the tools to cut a decent zip tie.

    View Instructable »
  • CPUDOCTHE1. commented on mikeasaurus's instructable Smoked Almonds

    I use a propane smoker. Electricity won't work when you do not have a source of electricity and charcoal temperature control is MUCH harder than propane.

    View Instructable »
  • DO NOT CLICK ON ANY OF THE LINKS. THEY DO NOT TAKE YOU TO EBAY.

    View Instructable »
  • Could you just apply flocking while the acrylic paint is still wet?

    View Instructable »
  • I just fold sand paper in half. Back side against back side. If the sheet is too big, I just cut it to twice the size of what I want to use.

    View Instructable »
  • The only non-pencil uses I have used a pencil for are:1. Replaced the primers in spent shells to dry fire my .357 Mag revolver.2. Cut one to length and used it as a plug for a shotgun.3. Plug fuel and vacuum lines on vehicles.

    View Instructable »
  • It looks like a pipe WITHOUT the BOOM to me.

    That seems more like burning paper in an oxygen rich environment to me than a rocket engine. When I was in highschool, in the shop, we found an old wooden spool of solder (about a 1 lb spool). We stuck it on the end of a lighted oxy/acetylene welding tip. As soon as the wood started burning, we turned off the acetylene and cranked up the oxygen. It made a cool flame. I didn't know it was an rocket engine. You could emulate the same thing for a lot less cost and time buy just drilling a hole through a piece of wood igniting the wood and blowing oxygen through the hole. Seems pretty safe to me as long as you don't catch your &*( on fire. We all know that oxygen does NOT blow up and ONLY supports combustion.

    View Instructable »
  • Inverters are rated at MAXIMUM load. If you are not using the full 400 watts, the inverter is not drawing 400 watts from the battery. and figuring you are only getting about 240 watt hours from the solar panel per day, you probably won't use 400 watts very often.

    View Instructable »
  • I would use a three prong plug, electrically connect all of the copper and hook the ground to the metal.

    View Instructable »
  • Cool build. It is always fun to build things. I bought a 0-30V, 0-10A power supply off of Amazon. Much quicker and about the same cost as building one. We used it to anodize aluminum and to charge a kids 24v riding toy. We tend to build the bigger stuff and buy the smaller cheap stuff. We built pallet forks and a grapple for our tractor with front end loader. My son has started drawing/engineering a tree shear for it. We also built a 4'x9' CNC plasma table that will convert to oxy/acetylene for about 1/2 the price of a $20,000 one.

    View Instructable »
  • Typically "studs" in floors or ceilings are referred to as floor joists or ceiling joists.

    View Instructable »
  • NO, it is the OXYGEN. You can MIG weld with pure CO2. It gives better penetration than Ar or CO2/Ar.

    I have NEVER been shocked by a welder unless I make contact with the ground AND the electrode , wire, or tungsten. You can weld electrode positive or negative and not get shocked by the ground clamp or anything attached to it.

    View Instructable »
  • OXYGEN IS NOT FLAMABLE. It ONLY supports combustion.

    View Instructable »
  • I will have to try that on humans the next time I have a tick on me. I have only had one so far this year. Last year I had 47 embed in my skin. Got tested for lyme disease last fall, did not have it.

    View Instructable »
  • Nope. No one to inspect it. We don't have any inspectors where I live.

    View Instructable »
  • If you have a 10kw generator, it will have a 50 amp breaker on the generator. If you wire it to a 30 amp dryer circuit, the 50 amp breaker will do NOTHING to protect the dryer wire, but the 30 amp breaker in the box in the house WILL protect the 10 ga wire going to/from the dryer receptacle.

    When I built my house, I did all of my own wiring. Completely legal and obviously better than a professional doing it for profit.

    I don't have a main breaker in my house. I have a main breaker on my electric pole (electric co requires it, 100 amp). From there I run to the house and a separate run to the shed which does have a 100 amp main.. How would I wire up a generator to code? I have a 14-50 receptacle on the generator.

    View Instructable »
  • It would be the density of water (8.34 lbs/gallon at 60 deg F) times the capacity of the barrel (55 gallons) or 458..7 lbs less the weight of the empty barrel. You can also add in the density of water multiplied by the volume of the barrel material if you want closer to exact.

    View Instructable »
  • Some people can't have fine wine. If you would rather have Kool-Aid than water, have Kool-Aid. No one cares, except maybe for you.

    View Instructable »
  • Cool I made one of those LONG before Al Gore even invented the internets. I mostly used it to cut cabinet doors when I built my house.

    View Instructable »
  • B.S. 3M UHB lasts until about a week before he double hockey sticks freezes over. When my son and I built his CNC Plasma Table, the best option was to mount about $700 worth of gear rails with double sided tape. It has endured 20 deg F to 110 deg F and water and mechanical abuse and works as good as new.

    View Instructable »
  • I did not read the whole thing. Pictures look good. Was there any warning about using/being around pallet wood? My nephew used to make a lot of stuff from pallet wood. And then he realized that pallets can be used to ship internationally and all are treated (some with strong chemicals) to prevent transferring insects, fungus and such so he decided that he did not want the pallet wood dust or the kids being around cut up pallets.

    View Instructable »
  • I am another fan of 6x6 concrete reinforcement wire. It is cheaper, easier to cut and bend (and bend can be bad, you have to straighten them out sometimes). We made some hog pens out of hog panels. An angle grinder is much easier. You can find angle grinders on sale for $10. Bolt cutters are going to cost you $30 for a decent pair, but the angle grinder is not as portable unless you have a generator.

    View Instructable »
  • So, instead of using sodium borate, you are making sodium borate in the plastic container?

    View Instructable »
  • CPUDOCTHE1. commented on andii's instructable How to CNC Without a CNC

    Before we built our CNC plasma/O/A table, we would print out parts on paper, transfer them to wood and cut the wood out, and then cut around the wood with a plasma cutter. It worked great.

    View Instructable »
  • I get well over 6 months out of pre-mix oil/gas and over a year out of gasoline. I have one tractor that is used about 30-50 hours in one week per year. Never had a gasoline problem with it. Never drain it. It also has the same tires on it that were purchased in 1961.

    View Instructable »
  • Cool build. I can not believe that people live in ^&*( ^&*() like that and put up with that kind of B.S. I live in a free state. The water that falls is yours until it leaves your property. When I built my house, I did not need any electricians, plumbers, permits, or inspections.

    View Instructable »
  • CPUDOCTHE1. commented on ThomasVDD's instructable Hard Drive Sander

    I doubt that it would run that slow. The motors are designed to run at 5400, 7200, or 10000 rpm. Even if it did run that slow, it probably would not have much power. Just don't push so hard when you are grinding on your knives and they won't get hot.

    View Instructable »
  • Cleans stuff and makes engines run.

    View Instructable »
  • I would MUCH rather hook the green power on wire to ground and put the switch in Line wire from the 120V connector going to the board so there was no 120V present on the board when the switch is OFF.

    View Instructable »