how to drill holes in 3 8inch thick steel plates home

Hand drill meets thick steel plate Ask MetaFilter

Nov 23, 2015 · Yes to pilot hole. Drill it all the way through. Use copious amounts of cutting fluid (I like the CRC stuff). It'll keep things cool. I'd drill the hole in steps. 1/8, 1/4, 3/8, 1/2. For unhardened mild steel you don't need any sort of special bits. How to Drill a Hole in Galvanized Metal It Still RunsPlace pressure on the drill motor. Depress the trigger of the drill motor to start drilling. Pump the drill's trigger to keep the speed of the drill bit down to reduce heat build up at the drill bit. Ease up the pressure that you have on the drill when you reach the exit side of the hole.

If You Hate Drilling Through Stainless Steel Try This

Oct 04, 2010 · After drilling the first four holes I sat down and took a rest. While I sat on my back porch with the sweat poring off me I told myself there had to be a better way. I then spotted my metal drill bits. I took a 1/8 inch metal bit and started drilling the next hole. Wow, it bit in right away and went right through in less than 30 seconds. Tonnage Chart Showing Tons needed to Punch a HoleHigh Carbon Steel:multiply x 1.60 A36 Steel (recycled):multiply x 1.25 Stainless Steel:multiply x 1.50 Also remember that you should never try to punch a hole that is smaller that the thickness of the steel. This is because the concentrated load on the punch stem will shatter it very quickly. Using Long Drill Bits for Door Alarm WiringBegin by drilling a 3/8 hole in the doorframe, where the switch will be located. Starting a hole with a flexible drill bit longer than 36- or 48-inches is difficult. I usually begin drilling with a regular bit, which is much easier to control. Then, I switch to the long drill bit after Ive got the hole started.

drilling large holes on 3/16" steel IH8MUD Forum

Feb 25, 2008 · The safe way is a little at a time. 1/8, then 1/4 then 3/8 then 1/2. I can strongly recommend a step bit, which will do this for you. Use the step bit that ends at 1/2 and you will get perfect holes How to Drill a Hole in a China Plate eHow

  • Place plate on a block of woodSet the porcelain plate on the block of wood. The wood will act as a buffer between your porcelain and your work area,Place masking tape and mark the spot you want to drill throughPlace a piece of masking tape over the area you wish to drill and mark the exact spot with a marker.Drill through the plate at a 90-degree angleHold the drill at a perfect 90-degree angle above the plate. If your drill allows you to set a drilling speed, set itSee full list on ehowKinda OT - Drilling 1" hole in .5" Steel Plate - Miller Aug 30, 2009 · i use carbide tipped hole saws for my 3/8" stainless plate. it takes a good 5 minutes for each hole but ive cut about 18 of them with my 1.5" hole saw and the tool is still in good shape. i buy them from fastenal, they are $25-$45 depending on the size. you have to make sure you tell them that you need a carbide tipped hole saw or else you will get a cheap wood saw that will be destroyed 30