Which tool to drill into jesmonite (very hard plaster)?

Hello workshop friends, I'm a novice maker and I would like to drill into jesmonite (very very hard plaster) to make candle holder (the hole has to be straight down). Which tool should I buy for that? A spade drill isn't good enough. Drill stand and the right drill bit or a proper drill machine? Thanks for your help! Lamie

Asked by Lamie 1 year ago


lost charger 18 volt cordless drill?

Can I use a 12 volt battery charger to charge an 18 volt drill battery?

Asked by 9 years ago




Cordless electric drill motor.? Answered

I have been experimenting with an old motor from a cordless drill no markings on it - Any one have any power information for these motors - they seem to produce a LOT of torque for such a small motor.? I find I can lift 4 Kg fairly easily - I guess I could do it the old way and measure and calculate HP.

Asked by rickharris 7 years ago


How to automatically play a timelapse on my instructable Answered

I have a time lapse in MP4 format. I'd like it to not be something to click on but would like it to automatically play when someone visits my instructable. How do I do this?

Asked by patsheldon 4 years ago


Why has nobody just dug down? Answered

I know we have really deep oil wells and geothermal things, but why have we not even attempted seeing how low we really can go.  In this day and age automation is easy and affordable, yet we haven't designed some simple machine to drill down to extreme temperatures and pressure to see what is really happening inside our earth. I propose a machine, similar to one of these http://en.wikipedia.org/wiki/Tunnel_boring_machine and we set it up to build a tunnel at a 45 degree angle and to place concrete pieces around just like it normally would, except on its own.  Water would be used to remove the material and if that became too difficult due to high pressure then.  A station would be built to boost pressure every so often.   Who doesn't think it would be awesome to walk around at the same depth as an oil well normally is, or deeper.  Because this drill is self contained it would have endless possibilities, at least until it melted or needed a cutting head repair.

Asked by jj.inc 6 years ago


Deep Hole drilling

This might sound stupid, but I've been wondering, is it possible to use a gun drill on a drill press? Does a drill press accept gun drills? If not, is it possible to modify the drill press so that it accepts gun drills? How? I've used normal drill bits to make "deep"(about 4 inches) holes in metal before, but it was very, very difficult to get it straight, and the metal became hot as heck after a while, sometimes the drill bit even got stuck in the metal and it was extremely difficult to get it out. Thanks

Posted by IlluminatedAntichrist 10 years ago



Cordless drill? Answered

Looking at cordless drill I noticed one which stated on it that it produced 32Nm of torque at 2000RPM. This seems a lot are they being optimistic. None of my drills have it marked on them.

Asked by rickharris 3 years ago


how do I drill holes into glass? Answered

I want to drill very small holes in to old glass, How would i go about drill?

Asked by rainbow75 8 years ago


Drill holes in computer speakers? Answered

Best tool to drill 3/8 and 1/2 inch holes in computer speakers.

Asked by keydogstony 6 years ago


How to make a homemade drill press?

I dont have a drill press at home because it cost too much for me but it is really easy to drill on anything if you have this kind of power tool. I have a portable hand drill and I am thinking of fabricating a holder for this as if I am using a drill press. Can someone help me out how to do it if it is possible to transform my hand drill into a drill press? Many thanks and more power to Instructables.

Asked by x.mat3000 8 years ago


What kind of drill bit do I use to drill into an outside brickwall.?

I want to  put up a bracket for a flag on the outside of the house, nowhere else to put it but into the brick.  How big a drill do I need, how long should the bolts be?

Asked by Clemenza 6 years ago


Inverted Drill Press?

Hi..for those of you who may own a drill press..do you think it would  be possible(On the smaller lighter versions maybe)  to invert it and use the press upside down to drill though 8" thick wood and land spot on ?..Cheers

Asked by thedude0078 7 years ago


24V Panasonic rotary hammer drill - battery and wires got hot (drill didn't) and drill stopped working. Answered

I have a 24V Panasonic rotary hammer drill, model EY6813. It came with two 3.0 amp-hr NiMh batteries, both of which had a problem with one of the contacts almost welding itself to the contact in the drill, and also in the charger. I stopped using those batteries. Now, using an external 7.0 amp-hr NiCd, it's worked fine until recently. The drill began to intermittently shut-off, then quit working altogether. I then noticed that the battery, the wire running to the drill, and the contacts in the drill were hot (battery was very warm, the wires & contacts were VERY hot). Any ideas about the problems with the NiMh or NiCd? Could it be the drill and not the batteries? The hot batteries/wires occurred after minimal runtime, so I don't think its a matter of overdrawing the battery, but I'm just not sure. The vent holes on the drill are not blocked.

Asked by 9 years ago


Were can i find cheap used drills? Answered

I need about 10 old drills to rip apart for their motors and gearboxes. Garage sales are a no go as i have not seen any drills for the last 5 years and i can't buy new.  So do you guys know where i could find some

Asked by FarmerKJS 3 years ago



Multiple drills sharing a single power source

Would it be possible to run multiple cordless drills off the same power source? I do not want to run the drills all at once, but rather have them share the power source. I was thinking of modifying an ac adapter with a voltage and amperage less than the tolerances of the drill. Are there any safety concerns? If I do this will I blow myself up? Could I run them at a higher voltage/amperage? Is this idea dangerous and stupid or just stupid?

Posted by ehudwill 6 years ago


trying to find a repair manual for a lawson paper drill?

Need a repair manual for a 1965 model paper drill, mainly need for the drive of the electric brake for engaging the up and down motion.

Asked by whitmarsh 9 years ago


Drill jig

I'm doing a project where in I am casting hard plastic (not sure what kind) and then need to drill into it at fairly precise angles. The pieces are more or less flat, about 3/8" thick, and I need to drill 1/4" holes in them lengthwise to insert some 1/4" acrylic shafts. I would ideally do this with a drill press but the pieces are kind of long, I do not think they would fit under the press. I have made a test hole by clamping a piece to a table and using a power drill held parallel to the table, but I wasn't able to be quite as accurate as I'd like. Anyone have any good ideas on this? I'm thinking a kind of horizontal jig, but I don't see very well how to make it.

Posted by rachel 10 years ago



Why Cordless Drill (Bosch 7,2volt) do not work using Laptop Adapter

Hello all.. I got problem with my cordless drill. It's battery is leak and i need to replace it using Laptop Adapter power suply. I have HP laptop adapter with Voltage Output 18,5Volt 3.8Amp. I just connected the + and - of laptop adapter to the cordless drill, BUT it do not want to turn and ONLY MOVE SEQUENCE (move-stop-move-stop-move-stop....). Its move is so strange for me, it's like pulse voltage because the drill just move for a moment then its stop, then its move and stop and always like that... I don't know is it DC or AC, and I've try to make circuit to make its voltage become DC using 4 diode and capasitor, But the result is same (move-stop-move-stop...). Then, I try to connecting the cable adapter to the drill and then pull off and connecting again with rapid sequence. Then the drill want to turn fastly... Please Help me, how to solve this, i need this adapter work for my cordless drill.... I've make a test to, I used AC dinamo (not DC dinamo motor) and connect it with the Laptop adapter, it's turn normally and fast... Please anyone here help me...

Posted by ddeeen 4 years ago


Using a mounted drill to power axle mounted device

Hi, I have just constructed a chicken plucker as in the photo. As an initial attempt the device worked really well - except for the connection of the drill to the axle. This was not well aligned so it ate the threaded bar which was trying to pull itself out and not helped with the thread direction. Are there examples of how to better power such a device?  I would like to be able to re-use my drill, I suspect properly aligned would work better. I could also swap to a non threaded bar but would need suggestions on how to keep the plucker barrel in place. Cheers

Posted by expatty 5 years ago


what transformer to power my 24v drill with 240v mains power? Answered

I use a dewalt 24volt allday at work and every now and then it would be handy to be able to use 240volt mains mainly when i forget to charge the batterys.i have a collection of old unuseable batterys to use as a body but cant work out what transformer and or circuitry it would need. any ideas? cheers dave

Asked by wavey davey 5 years ago


Power Tool Repair

I have an old Bosch electric drill (CSB 420E) which has started behaving strangely: Its speed has dropped greatly, and it sparks so much I could turn the lights off and still see what I'm doing. I suspect a fault in the armature or field coil, but they both look OK. Brushes seem ok as well. Any ideas? I'm reluctant to junk it because I am too mean to buy a new one.

Posted by Dodd 10 years ago


Is it safe to use a normal drill bit to drill into a glass bottle? Answered

 Want to make a lamp out of this bottle i have. But also dont want to die..

Asked by Whales 8 years ago


How can I use my cordless drill on this old drill stand?

I got this at a garage sale but my Ryobi cordless drill does not fit properly into the holder/slot, it takes an old sears craftsman drill. Any ideas on how I can get it to work? Thanks.

Asked by hmunster123 1 year ago


PCB Drilling?

I have heard that tugsten carbide pcb drill bits are too fragile and will break if used with a hand drill. I dont want to buy a drill press due to the cost (unless i can find a small and cheap one)... so will a 1/16 drill bit be ok for pcb holes for standard through hole components? because that is the smallest drill bit size i have that successfully works with my hand drill... any personal experience, knowledge or advice to help me? and thanks

Asked by raykholo 9 years ago


craftsman cordless drill battery

I need to replace my 19.2 V cordless drill battery.  I can't find the battery. Can it fixed?

Asked by tdcb46 8 years ago


Automatic LED light for cordless drill?

As far as I know, DeWalt has not incorporated lights into their cordless drills as some other manufacturers have.  Could someone make an LED light which would come on when the magnetic field produced by the drill motor is sensed?  Perhaps a sensor taped to the drill body, and a small LED light pointing forward, or a ring of light around the drill chuck?

Posted by jonwells 7 years ago


Anyone know how to drill holes in small stones?

For use as beads.

Asked by Schaftt 9 years ago


DRILL CHUCK KEY?! Answered

I recently bought a used drill but it came without  a key for the chuck. does anyone have any ideas for a  DIY chuck key or a cheap replacement? THANKS!

Asked by embochner 7 years ago


Drill hole in glass bottle? Answered

 Dear All.. I would like  to drill holes(3 to 5 mm) on a many of glass bottles(beer bottle). Could you point me what kind of DRILL BIT ( see photo please) is better'.Thank you in advance for your time.

Asked by lam 4 years ago


can i attach .8mm bit on power drill?

I have a power drill of chuck size 1.5mm can i attach .8 mm bit on that help me

Asked by Brave_heart 6 years ago


Is it possible to convert bench drill machine to automatic drill machine ? Answered

Please if some one can help and guide in detail , thanks in advanceI have this type of bench drill machine 1, I want to convert it to double chucks2, so that it can hold two drills3, I want to drill diameter 4mm, depth 5mm in two pieces simultaneously 4 I want to put some sensors so that drill bit( dia 4mm) should automatically go deep to 5mm After touching the job surface and then should go up again so that we can put another same job again5 It should also sense the load the drill bit is having while drilling and it should stop automatically when the drill bit has certain higher load so that it can be re grinded and re fitted again Thanks In advance

Asked by Singh 9 years ago


How to drill holes in thin steel? Answered

To save me going through the trial and error stage (I can only eat so many Altoids), what is the best way to drill a matrix of neat 5mm holes in the lid of an Altoids tin? Centres will be 12.5mm (1/2") so reasonable gap between. How do you clamp and support the tin without bending it? What drill speed do you use? Centre-punch first? Drill pilot holes? Drill from the inside or outside? I have a bench drill and usual workshop stuff available.

Asked by AndyGadget 9 years ago


can i convert a corded drill into an AC generator?

Wondering if i can use the same steps as this to make an AC generator:https://www.instructables.com/id/Cordless-Drill-Crank-Charge-Batteries/

Posted by ngsean 10 years ago


Dremel Plus Drill Press?

Would it be Possible(practical) to substitute a Dremel for a drill in one of those presses where you add your own drill? (Which I can't seem to find the presses, that I'm talking about online. Although I know they exist.) Found one, and it seems to be used with a dremel. (I think.)

Posted by kojimagtr 10 years ago


Drill with wheel head instead of (dremel) rotary tool?

(new member) quick question: Instead of buying a dremel rotary tool, couldn't I just buy a drill head that mimics the wheel-cutter attachment.... that you would normally use on a dremel?

Asked by trustsushi 7 years ago


How to drill holes on ABS plastic?

Hi guys, I have this plastic which I think is made of ABS plastic. I need to drill a rectangular hole and and some circular holes in the container. As such, what method (milling machining/drill etc etc) should I use to achieve my goal without damaging(cracking etc) the container? I have uploaded a pic of the container.. thanks

Posted by kurtselva 5 years ago


How to open and repair cordless hand drill? Answered

Today i was drilling and it started to smoke. It does that only when working. It smells like plastic and i can see fire inside, behind the motor, What's burning? Than i tried to open the cover but it seems something is still holding at the end of the machine. Should i unscrew also the chuck?   THX

Asked by Karletto555 7 years ago


how do i build a drill bit sharpening guide?

I want ta build a bit holding guide out of a block of wood so it will give me correct angles . also one for knives

Asked by steamop 8 years ago


Doctor drills into boy's head to save his life

The regular household drill is a wonderful thing. It can be used for drilling holes in wood, scrambling eggs, and even drilling into a boy's skull to drain it of blood clots. Yikes!Dr Rob Carson performed the procedure on Nicholas Rossi, 13, after the boy fell off his bike and hit his head.The doctor had never attempted the surgery before, and had to be talked through the operation by a Melbourne neurosurgeon.The boy's father said the doctor's improvisation had saved his son's life.But Dr Carson told reporters: "It's not a personal achievement, it is just a part of the job." Link

Posted by fungus amungus 9 years ago


Centre drill without a lathe

Can anyone suggest a simple way to accurately drill a hole in the end of a dowel so that it's perfectly centred and parallel to the sides? I want to install hardware in two brush shafts to make a break-down pole that will support a tarp, and will fit in a car boot. If you imagine the brass hardware you see in a snooker cue, you'll get the idea. I could make a jig to hold, and align, the drill and dowel but it's a lot of fuss for a rig I probably won't ever use again.

Posted by barista 2 years ago


Torque loss in Drill

Hi, I am having some trouble with torque loss from a drill motor and gearbox I harvested for a project. I followed the steps in this instructable (https://www.instructables.com/id/Hacking-Drills-CheapPowerful-GearboxMotors-for-/) to get the motor and gearbox. I then hooked it up to a motorshield and an arduino. Originally the drill (Rigid 18v Cordless) States that it can deliver close to 500 lb-in of torque. However when I hook it up to my apparatus I am able to stop the spinning with my hand.  I use PWM to control the speed but upping the speed still does not produce the required torque. If anyone has any ideas as to why it dropped in torque I would be very appreciative. Thank you in advanced.

Posted by Alipha 2 years ago


Where would I purchase a drill bit to mill out PCB for the dremel tool for my CNC Machine? Answered

I am Buliding Tom McWire's CNC machine and I plan to use it mainly for Milling PCBs. Prices-Sources-alternatives please

Asked by 16zzundel5 8 years ago


Does anyone know were to purchase a "Thermistor" for a Ridgid 14.4 drill battery.

I have attempted to get it at Radios shack, and several rebuilders of batteries and they will not sell me one.

Asked by reichardt55 7 years ago


$50: Dewalt Drill and Instructables Prize Pack

Hi Folks I won a 2nd place prize in the Instructables Plywood contest, which is: Second Prize (5) Five Second Prize winners will receive: a DEWALT DWD112 8.0 Amp 3/8-Inch VSR Pistol-Grip Drill with Keyless All-Metal Chuck an Instructables prize pack including a robot t-shirt Estimated Value: $85.00 Unfortunately I cannot use the drill, since it is 110V and South Africa uses 220V. I would like to swap it for a $50 Shapeways/Amazon voucher  (that's easier than sending cash). I have already confirmed that the good folk at Instructables will happily ship the package directly to you once I put your details in the claim form. I'm negotiable though, make an offer ;-)

Posted by ossum 2 years ago


motobike from old drill

Does anyone know how to motorize a bike, when the motor is from an old drill? I have been trying to do this for weeks, and I couldn't figure it out. This is what I have so far:I am trying to put the motor on the frame of the bike, and attach a sprocket to the end of it. The sprocket will be linked with the bike chain, coming from the rear wheel and leading to the petals (actually, the axle where the pedals used to connect). I will most certainly need a bike chain extension, so I would also like links to sites where I can get some.Also, I would like my bike to go fast AND have moderate torque, so I need a gearbox assembly.I know this is a lot of requests, so take your time. Thanks.

Posted by YummyPancakes 10 years ago