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18

A hole saw. Nice and round, complete with a center hole.


15

Seriously: You just don't. Reasons: You'll never be able to guarantee you didn't contaminate the fuel unless you clean it thorougly after the work, which you cannot with all the diesel in there. That bears great (financial) risks. If you sell that stuff you might even get sued. Special drills and precautions will surely reduce that risk, but it will ...


12

This stuff is sick: http://www.evaporust.com/ I used it on a drill press my buddy left out on a patio in the rain for a year. Virtually no scrubbing. I don't understand how this is not one of the most widely known products in the world. It is THAT good. I guess with the military as a client, they don't need the business from the public. Here are some ...


11

After cutting the bolt to length, use a stationary grinder instead of a file to clean up your work. With a grinder, it's easy to square up the end of the bolt and apply the chamfer that you want. Just be careful, especially if the bolt is shorter than the grinder's table. If the bolt is short, use a pair of vice grips to hold the bolt during grinding. And ...


10

A knockout punch is typically capable of going through thicker metal - at the very least, it will do it faster. A quick search easily finds knock-out punches that can do 10 gauge steel, where most step bits don't seem like they'd do well beyond 16 gauge (though I can't find anything that really says the limit). For thin metal though, the step drill bit is ...


9

There are several online metal suppliers that will also make custom cuts. Online Metals is one that I have used. There is a minimum length that you must order (usually 1 ft) and a charge per cut. Depending on where you live you might also find a local metal supplier that can do the same for you. Wherever you order, I'd suggest you get two 5" pieces ...


9

You don't want to "drill" a 1" hole in 3mm sheet. Without support the edge would be ragged and other problems would occur, such as fragments dropping into the tank. The best approach is probably to use an annular grinder. They are used for putting holes in tile and glass. Search for "diamond hole saw" on Amazon. Use a lot of water to cool it and the slowest ...


7

I would use a punch to make a small dent in the pole so my drill bit wouldn't slip.


7

I have played with various fire pit options in my backyard for 15 years. I have tons and tons of trees and yard waste and try to burn most or turn it into compost. I have grabbed the saucers from trash piles and used those - can't put much on there and wind blows stuff off easy. I have had an enclosed mini-chimney pit I built from stones. This worked ...


6

As Karl recommends, drilling dry with a metal drill bit (HSS or Carbide) is the basic information that you need. As far as drilling speed goes, you can refer to a cutting speed chart and do a bit of math. Aluminum's cutting speed is 350-400 fpm or 106,680-121,920 mm/minute. The distance travelled by a point on the outermost edge of the bit during one ...


5

You can make watertight trays from flat sheet metal without soldering or riviting. Take a sheet of metal whose length is the length of the finished tray plus two time the height of the sides; width is the width of the finished tray plus two time the height of the sides. Fold the sheet so it ends up looking like this: You can fold up one side at a ...


5

Based on questions answered in chat you have a case where the contractor didn't measure the deck properly, and built it too high, could not flash properly under the door frame, and performed a "some genius" move putting a transition strip (meant for interior use) over top of the door frame and the vinyl, with caulk under neath. Stupid. Two options: 1 ...


5

Drill dry. You need a carbide tipped bit that's rated for metal; this will be obvious on the outside of the packaging. I'd drill fast.


5

You have the basics down pat. The key to getting the threads working properly is: Squaring off the thread end of the bolt. Yes, the hacksaw blade will follow the threads slightly. If you have a bandsaw with a stock holding vise that can be squared to the blade, run a single nut on so the hexes will hold the bolt in place as straight to the blade as ...


5

The punch suggested by SpectralGhost is a good idea. If that doesn't work, you can make a jig with three pieces of 2x4. Screw the pieces together and drill a pilot hole for the drill bit (the dotted line) using the same size bit you intend to use on the pipe.


5

The internal bowl/barrel of an old washing machine works well for an above-ground solution - the holes around the sides allow the embers to breathe well and help to radiate heat. You can add legs as this person has, or simply prop it up on a slab or some bricks. Just make sure that it IS metal - a lot of the newer/cheaper washing machines use plastic ...


5

Use oil to cool the bit, if oil residue is not a problem. Use water if that will be a problem. Keeping the bit cool is crucial to long bit life. The larger the hole the slower the RPM are to be used to drill the hole. Slow enough it is easy to count the revolutions is a good reference for how slow. When using a drill press the RPM are usually slower, and oil ...


4

The bases of the stand look as if the pole is welded to it. Unless you have welding skills, cutting at the base probably will not work. The top appears to consist of a thinner pole that the speaker is attached to, inserted into a slightly larger pole that is attached to the base. In addition, there is a locking knob that seems to go through a threaded hole ...


4

Based on the clarifications, I would recommend using a reusable thread-locking liquid. Here is a link to one I found that may work. I have not used it. Vibra-Tite VC3 Threadmate http://www.vibra-tite.com (I am in no way affiliated with the Vibra-Tite Company)


4

Is the garage door made out of steel? Here is a good article on repainting rusty steel: I think the key is to prep by washing the area and then removing as much rust as possible by scraping and then using a wire brush (or even sanding). Prime the area with Rustoleum. The topcoat should be high quality latex exterior paint.


4

I use CLR for that sort of thing. The main purpose in my house is for hardwater scale, which accumulates on everything, but it also works on rust. Handle with care, it is wicked strong.


4

I don't know about the machine, but depending on the size of the wire and the length, you can straighten it by holding one end in a vise and then holding the other end in a pliers and giving it a quick jerk. It takes a little practice but it works quite well. However I would hesitate to use this technique on wire you plan to use for household wiring. If ...


4

If you're trying to cut in place, I'd personally go with drilling an initial hole, and then cutting the shape of the vent with a "sheet metal nibbler". The nibbler will let you cut from one side, as there's a small bit that you insert into the hole, and sheers off a small roll of material (somewhere near 1/8", depending on the exact pair). You can also ...


4

If you can remove the entire face plate use regular paint stripper. When you get it down to bare metal you can polish the surface with scotchbrite pads or steelwool. You might find something to attach to your drill to make this part easier. Once you get the finish you are looking for cover it with clear enamal to protect it. If you can't get an acceptable ...


4

It may be that the frame was originally designed to have slats span the rails, and not have the mattress (box spring) sit directly on the rails. This would have lifted the mattress up a bit, and possibly allowed it to ride over the bits that are giving you trouble. This was one persons solution:


4

User assumes all responsibility! Adding CO2 to displace the O2 sounds like a reasonable precaution. Use a knockout punch from Greenlee. Quite pricey though, do not buy a cheap one. Good up to 2.5 mm (10 gauge), meaning it's not going to like 3+mm but it will probably work once. Advantage is you only have to drill a 1/4" or 1/2" hole. This does require ...


4

Why not buy a dowel the size you need and cut off to width. 4cm is around an inch and a half, so you should be able to find this size of dowel fairly easily. Then, plot a cross to obtain the center and stick it with a drill. While the center hole will be a little harder to locate the a hole saw, your outer edge will be a lot smoother with less work. Once you ...


4

Find a scrap tire rim, and place it on top of four or five bricks. Voila: one excellent firepit.


3

Under perfect conditions this is not true. However most of us are unable to weld something under perfect conditions. There is always the risk of contaminants, imperfect welds, incorrect temperatures, etc. This holds true even in many industrial factories. For this reason, some very high end cars have their frames glued together instead of welded. You ...



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