I recall there was an instructable about making a portable hole, or optical cavity with lights in it. As far as I knew, it was used as a coffee table, but I can't find it now. Has it been removed?
Topic by octochan | last reply
Question | last reply
Ok so 40 years ago Stephen Hawking came up with the theory of Black holes and today they are not black but gray. It turns out that the black holes Hawking wrote about in 1974 — those places in the space-time continuum that can devour galaxies and even trap light forever — may not exist in the way that he proposed decades ago. So I read the paper. http://arxiv.org/pdf/1401.5761v1.pdf I found it a bit dry compared to A Brief History of Time but that is the life of a paper. I have always believed a theory is just that and no more, prone to evolve or be disproved with the advent of new theories and facts. After all it is just a theory and not a fact even though many of these theories enable us to the most amazing things. Which reminds me of a joke. A Canadian fisherman was down south fly fishing with an American fisherman that happen to be a marine biologist. Soon the Canadian fisherman caught a one pound brook trout and stated it was just a baby and threw it back. The American marine biologist not objecting to catch and release, objected to the Canadian calling a one pound Salvelinus fontinalis a baby. He explained to the Canadian fisherman that the Salvelinus fontinalis is genetically unable to grow larger than one pound. The Canadian fisherman retorted I catch five pounders in the Boyne River all the time and that was just a baby where he comes from. The American marine biologist objected to the Canadian calling a one pound Salvelinus fontinalis a baby. Again he explained to the Canadian fisherman that the Salvelinus fontinalis is genetically unable to grow larger than one pound. Not wanting to argue the Canadian fisherman let the subject lye and spent the rest of the day fishing throwing their catch back. At the end of the day they exchanged addresses and parted friends. A month later the American marine biologist received a parcel in the mail in it was a frozen five pound brook trout, distraught he began to write the Canadian fisherman a letter. “Dear Mr. Fuddel Duddel Thank you for the five pound specimen of the Salvelinus fontinalis, and thank you very much for ruining perfectly good science with a fact. Sincerely John Doe”
Topic by Josehf Murchison
I would like to drill a hole into he bottom of a 3 quart stainless steel mixing bowl in order to insert a 1/2" brass needle drain cock (and then secure the valve to hold liquid). How do I measure the diameter of the valve so I use the correct drill bit? How do I get the hole centered.? How do I keep the pot stationary? The bowl is thin, how do i keep the bit from ripping the metal?
Question by angelikaengel | last reply
Never composted before, but am going to get a 55 gal poly drum. I live in Phoenix, AZ. the thing will probably be in shade most of the time. Will that get too hot for worms? How many holes should I make, how close to the bottom and how big? Thanks.
Topic by dorothyroeder | last reply
I have made the Patio table and I was debating whether or not to plug the pocket holes. I am concerned that I might have to tighten the screws over time so should not plug them but if I do that I am worried about insects (spiders) nesting in the holes - any thoughts ?
Topic by Barrievans | last reply
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
Topic by kurtselva | last reply
Our refrigerator ice tray has a 3 inch hole in the bottom. The hole is in the curved part of the floor of the tray. Is there a flexible plastic/acrylic I can use to repair the hole?
Question by readbob | last reply
Hi all, I'd really like to work with glass objects. But I need to drill holes in glass. I have no idea on how to do this, and if any special tools or techniques are required. If anyone know anything about working with glass and drilling perfect holes (without breaking the glass), can you please instruct me on how to do this. Thank you
Topic by robolux | last reply
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
Topic by IlluminatedAntichrist | last reply
So I have been looking up a little bit about the ozone layer and have found that about 12% of the ozone layer is reproduced by UV rays every day. So the whole thing is replaced in about 8.3 days. Now I think thats a little bit shorter time-span than since we stopped our mass release of refrigerants into the air. It has even had a bit of time to catch up. Now if you think about it, less ozone = more UV = more ozone right? So how On earth did we blow a hole in our ozone layer, it makes absolutely no sense. Even the fact that some of the halocarbons may still be there makes no sense because it absolutely could not affect the ozone without reacting with it.
Question by jj.inc | last reply
This is a really basic question—I have managed to get to 66 years old and still be a complete handyman novice, I have tried but my best efforts are lamentable. I think it is because I have never had anyone to show me handy things and have never asked anyone so turning over a new leaf I am determined to start making a few things instead of spending a fortune buying them and paying people to do things for me. My first project is to make a simple slide carrier and I have bodged one up in cardboard but it really needs to be in something stronger so it is rigid, metal would be ideal but very stiff board would also do if I can not cut the metal. I do have a thin sheet of aluminium, (from the casing of an old laptop) that I would like to use buy am frightened of messing up & worse injuting myself! I now realize that I have no idea how to cut a square hole in a piece of metal or, for that matter, what tools I need to cut aluminium in the first place! My overiding consideration is to be safe so I don't want to try, (what to me is a daunting task but probably to you guys the simplest of things) not knowing what I am doing. So can someone please help me out and tell me what tools I need and how to go about cutting a square hole in a piece of metal? Rest assured I will not do it if I do not think I can safely. Thanks.
Question by Allsop | last reply
I was walking down the street, Gandering at my fellow human beings flower gardens and I noticed one of them had a garbage lid on the ground. I went to pick it up and noticed that underneath there was a hole in the ground with compost and bugs doing there work. I thought hmm.. BRILLIANT! I might be rambling, but I was just wondering... Why havent I heard of this before. Is it a good idea?will it work?
Question by CrawdadMan | last reply
For reasons yet unknown, my newest pair of jeans is developing several holes in it. Just the left leg, in irregular patterns, with no apparent cause. It was initially a handful of quarter sized holes and I believed they were related to something I had done at work or had in my pocket but since then more smaller ones have started to appear. (Pictures can be produced if necessary.) Now while the obvious answer would be to get new jeans, they are my newest pair, fit well, and have the carpenter augments. In short I would like to keep them. I have some older pairs of jeans I can shred up for patches, but I wear these primarily for work. I work in retail at a home improvement store, where appearance is somewhat regulated. I can't just go willy nilly and make them look ridiculous. They have to still be, at the core, blue jeans, but if I can repair them, and potentially dress them up a little in the process, I'd be thrilled. Also if it can be a fairly simple fix, because I don't have a sewing machine and am not overly good, or patient, with a needle, it would be appreciated. For a little extra and over the top I am engaged in the steampunk movement, but as far as fashion goes I have not seen much done with blue jeans that leaves them recognizable. Right now my main touch is a pocket watch on a chain, but any other ideas that contribute into the current repair would be appreciated.
Question by ElusiveGreen | last reply
My idea is to mold plastic with air holds and a type of fabric. thanks...
Question by icess | last reply
Just a short forum topic to show you guys what i found when i was searching around on the web. I found out that mine and shadowman39's knex hole puncher was featured on Geekosystem =) http://www.geekosystem.com/knex-hole-puncher/ Yay! =D
Topic by Hiyadudez | last reply
An odd question, I know - but how do I make a hole in the bottom of an old toilet bowl without breaking it? It doesn't need to be a neat job...
I need to run some cables up the back of a built in bookshelf. How can I make a neat hole if my drill will not fit, I am trying to avoid purchasing a 90 deg Chuck? I thought of using my small electric screwdriver but it does not have the power to drive the bit.
Question by Lylec | last reply
I've got a clarinet mouthpiece and some pvc pipe...25mm but i'm sure I can adapt it bigger if necessary. Is there some elegant equation (like where the natural harmonics on a guitar lie) to calculate the spacing and diameter of the finger holes for chromatic tuning?
Question by timgray | last reply
I'm trying to drill 90 degree 14mm hole . My hammer drill without hammering is too fast. Cutting is not clean and wood splits. Maybe i'm doing something wrong. I have drill guide for it I also have drill stand. What I don't have is drill guid for my cordless drill. As european I cant buy wolfcraft older model or any thing like this http://www.highlandwoodworking.com/ProductImages/drilling/075012.jpg I only have hand tools.
Topic by DeathSuperMario | last reply
I found a loop hole in the 5th amendment i think they made a movie about this. okay how the story goes is a wife gets framed for her husbands murder but when she gets out of jail she sees that hes still alive so therefore legally she can kill him because of double jepherdy the fifth amendment she cant be on trial for the murder twice isnt that messed up?
Topic by ich bin ein pyro | last reply
On a hovercraft will I have to create holes in the lift fan, if purchased
The demintions of the steel plates are roughly as follows. 6"x9.75"x0.5in I also has a 3/4" hole drilled about 1 1/4" from the top. The next plate is about 3"x16.25"x3/4" it too has a hole that's 1" in dimater and 1 inch from the top. The next plate is really beat up but it's about 5.5"x4"x1/2" it has no holes. The next plate is 9"x2.25"x3/4" it has 3 holes the first one is 1.5" in diamiter and about 1.5" from the top the 2nd and 3rd holes are about 1" in diamiter and about 6.25" and 8" from the top. The next sheet is slightly bent somehow but its about 8.75"x3.5"x.5" it has 2 rows of holes each measuring 3/4" and the rows are 1.75" apart, there are 5 holes in each row and each one is 1.25" from the next the rows start 1.5" from the edge. That piece was hard to describe and I proboly didn't do a great job but now were on to the Blocks. The first block is 3.5"x2.5"x2" and has 2 holes on the 3.5"x2" sides that are 1" is diameter 1/2" from the sides and 2" apart. The next block is 8"x3.75"x3.75" with 2 holes. The hole are on the one of the 8"x3.75" sides and are 3/4" in diameter there 1" From the closest 2" side and centered (just as the holes are unless otherwise stated). And the aluminum block is 11.75"x2.5"x1.5" with no holes. If you guys thing of anything cool or useful I could build with these it would be much appreciated. If Anything was unclear please feel free to ask. Note: I messured the distances to and between hole from the center of the hole
Question by aloving95 | last reply
As you can see on the image, there are two holes on cloths pins. Why ?
Question by Quest for Questions | last reply
I've only seen the end result of a project. My college woodworking teaher had an acrylic cube that had curved holes drilled in it. I know how it's done but would like to see an instructable on it. I've searched and searched. I only found a very broad article on the steps to do this but not detailed enough for me to attempt it. If someone knows how this is done OR has experience with acrylic, please let me know if you write an instructable on this process. If you have worked with acrylic before but do not know the process, I can explain it. THANKS!
Topic by Squash | last reply
A few days ago a friend gave me a directional mic he used with his camera.Of course I don't get these things as a working present but to repair them :(Anyway...Taking it apart to expose the inside was the first nightmare as for some reason my friend decided to use a splash proof mic on a totally unprotected cam.If you ever tried to take one of these aquarium tube heaters apart you know what I mean...To my surprise this formerly expensive toy failed due to a bad solder connection, easy to fix.And lucky as well because the actual microphone capsule was glued in place pretty good.A quick test on the computer with the supplied microphone amp showed it worked fine again so I wanted to find out how it actually works.They toy ones use a half sphere or mini dish to reflect the soundwaves onto the mic.My friends however was an aluminium tube of about 20cm lenght.15mm in diameter with the mic being just 5mm and sitting in what seemed to be the end of a little funnel inside the tube - right at the end.So in theory I would now just say the thing gets what comes in from the front, but well that would be far too easy...When I pulled that fluffy sock off the mic I realised two weird things:6 small holes going straight through the mic funnel and outer tube.A glued in relatively soft plastic sleeve with a wave pattern.It seemed this pattern changed on the way down but I could not really see inside properly.Closing the front hole and the mic had no problems getting all sorts of noise from all directions, quite lower in volume compared to a direct hit from the front though.Closing the small side holes with some tape and the mic is still very directional but also really noisy.It seems some acoustic magic is happening in the tube.No real clue though but I guess the sleeve acts like the sound dampening in a test room.Without it all sound entering the tube would reach the mic, while with it really only a very tiny, front facing angle is able to reach the mic.The aluminium certainly transmits some sound onto the mic and the glue appeared to be rock hard as well.So I have to assume that the sound entering through the tiny holes somehow cancels out the noise transmitted by the tube itself.With just 15mm in diameter however I can calculate what I want but am unable to get any true 180° phase shift happening.Looking up how other types of directional microphones work was a bit helpful here but not so much in understanding the holes and liner.My friend said it is well over 30 years old and that he got dirt cheap at a garage sale.No markings anywhere and the small amp only has the connectors for mic, power and output.Did not check the circuit board inside as the housing was glued together.So:Why holes in the side right at the height of the mic?Why does it "hear" all surrounding sound when the front is closed but only directional with the front open?And I mean directional even with some music playing close the mic :(By the way: Battery pack for the mic was the classic four pack at 6 Volt.
Question by Downunder35m | last reply
I'm trying to make a hole about a millimeter in diameter in the side of a piece of standard airline tubing. I've tried poking a heated needle through the side, but the hole was too small and the heat warped the plastic. How should I do this without destroying the tubing?
Topic by El Mano | last reply
I am making a folding seat i found on youtube. It has several 5/8 inch dowels for the joints. To drill holes for the dowels, i went and picked up a new 5/8 inch bit for my drill. after cutting everything out and drilling the holes, i realized that the holes were too loose for the dowels; it wouldn't stay together. Rather than trashing it what could i do to save it?
Question by schoonovermr | last reply
Friday the 16th of August will be Instructables/Jameco build night at the Rabbit-Hole in Rochester, Mn. We did the unboxing of the Jameco grab bag of goodies last week, so I'll link that video here: It's called The Rabbit Hole - Episode 032 http://www.youtube.com/watch?v=3GQqA56uS7s Thanks again to Instructables.com and jameco.com for making this happen, we're looking forward to an educational and fun night!
Topic by mazzmn | last reply
Hi i accidentally drilled 3 hole in a 100mm pvc rain water drain pipe which comes from my roof. any ideas on how to fix this without breaking and chopping the wall?the pipe is behind a brick wall. please any help would be appreciated. thank you
Topic by mzminty | last reply
Our home is on sand, lime, sink holes. It helps to direct rainwater away from the structure to prevent sink holes. My question is if there are recommended soil treatments for sand. If it will help to coat the perimeter with two feet of soil and sod, I'll do it. I really like landscaping and I just wanna make sure using a few feet of fertile soil and sod is an option without making things worse. Any other recommendations would be very much appreciated. Thanks all.
Topic by Sovereignty
Right so im trying to make a speaker system for my bicycle and i have some smaller speakrs that i want to use an altoids tin as the box to mount on handle bars, but i dont know what tool to use to cut the holes the speakers im guessing are about 1.5 inches in diameter. or smaller. anyone got any suggestions?
Question by unaffiliatedperson | last reply
I ran into a glitch in rehabing an old park bench. The wooden slats were rotted out, so I'm saving the wrought iron end frames and fitting them with new poplar slats. I included a mid-project picture below of one of the end frames. I don't know if you can notice from the picture, the holes in the frame for mounting the slats were not in a straight line, but rather haphazardly. So each board needs to be custom-drilled to match the mounting holes in the frames. Problem is, I originally measured the distance between the bolts on one of the old slats and used that measurement to drill ALL the new (expensive) hardwood boards. I had made the careless assumption that the holes in the frames would be in a straight line. Never assume good workmanship! After drilling the slats, I applied about 5 coats of clear urethane spar varnish. The new slats look supreme, and I don't want to zorkk them up by drilling a second hole in each board to match the stupid end frames. So the only way out of the quagmire I can see is to drill the frame to match the boards. OK! Problem is, most of the new holes in the frames would intersect the old holes, and I know that drilling an intersecting hole is problematic, especially in 3/16" steel. So I need advice on how to stretch holes in steel into an oval shape. I'm thinking some sort of router bit, or a grinding bit that I could use with a hand drill. Suggestions? Thanks.
Question by LesB | last reply
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.
Question by AndyGadget | last reply
Hey all, I'm in warren Michigan area. I found a great place for some decent sized scrap hardwood like maple, oak, cherry. Sometimes walnut or other more exotic types. North of warren in Fraser there is a cabinet company called audia, in the back they have a large amount of 1-1/2" wide X20' lengths! Also, a place called laired plastics has an assortment of different color, sheet plastics various thicknesses as well as blocks of white plastics. In the back they have several bins with different material in each one... Now, i need a place to get square tubing with the holes in them. I need about 12' of it but i don't need any piece longer than 1' anyone know of the business types that would specifically deal with this stuff? I see them knocked down by cars very often, i can work with those! Lol i just need to know where to look to find them. Google has an overwhelming amount of suppliers, but i don't need long sticks i just need some scraps... Call me cheap, buti would like to find them for as free as possible!
Topic by SlickSqueegie | last reply
As has been reported by other users, I occasionally end up posting "invisible" comments, either at the top level, or as replies to someone else. These comments are visible to me when I view the forum topic, Question, or Instructable (and the comment count includes them in that view!). However, the forum browsing page doesn't show them (neither as "last post" nor in the count), and they are not visible to any other users. My most recent example is in BIGHAIRYDUDE's bug report. I posted one comment at 4:18 pm (CAGESVXGGMMFD6M), and another at 5:08 pm (CTRYNTKGGMMFDBI). Those strings are the commentId values, which I can see on the page when I do "view source"! I constructed the URLs by hand. If I use those links in another session where I'm not logged in, they don't work. But if I log in there (on Safari, so there's no chance of cookie or cache confusion), then my comments appear! This behaviour is unpredictable. It seems to happen once or twice a week. When it does, the particular forum topic or whatever is affected permanently (i.e., any comment I try to post is invisible), but other topics are not affected at all. I know that's going to make it hard to isolate and fix, but I'm hoping that the IDs might be of some help...
Topic by kelseymh | last reply
I wanna draw a hole on my wall but i dont know how to
Question | last reply
Question by codestroy7 | last reply
I am replacing a bridge, on an acoustic, the new bridge does not the peg holes drilled out yet. I found one site that says to ream with a tapered reamer from some company. This has got me worried because I have drilled the holes to 3/16" but the pegs don't go all the way down. I have not gone to my go to guy yet cuz its almost twelve thirty at night, please help.
Question by addicted2paintball | last reply