What tool do you metal pounders recommend for cutting circles? I welded up the side marker mounting holes and am read to weld in a disc in the large center hole -- don't want to pack that sucker with filler, ya know
BTW, I have very shallow pockets so let's keep costs down
A holesaw without the center drill bit? If you can get one the right size, their cheep.
Humm, without a pilot drill, you need to do it in a drill press.
Clamp it down (the sheet metal) on a block of wood VERY well or it will eat you alive.
Or:
Scribe the diameter out with a compass and cut with L or RH sheet metal shears. File or grind to clean up.
Easy.
What he said....
or if you don't have a drill press put a block of wood under the metal and stand on it. Drill slow. Your shoes can as a guide for the bit. Wear old shoes.
If you can't get a hole saw the right size, get one slightly bigger and grind the edge till it fits.
If you drill a hole in a block of wood first (w/ hole saw AND pilot bit), you can clamp the block to the sheet metal, and drill using the hole saw w/out the pilot bit (or a drill press ).
If money is an issue, trade fancy tools for good old fashioned labor.
Just mark a circle with a compass (or a quater and the tip of a knife or whatever) and cut to the line with tinsnips. File to fit.
Otherwise, use a fender washer - remove all plating - weld the center hole - and file the outside to fit the fender hole.
with Korijo
If you do the block of wood/old shoe method, make sure the block of wood is wide enough for your whole foot. I tried it on a 2x4. I lost my balance and fell backwards, obviously faster than I could get the bit out or stop the two handled 1/2 torquemaster beast drill, the metal piece slips out from under my shoe, gets flung off the drill across the garage, bounces off the car hood (not a 914) and imbeds itself into the far (finished) wall.
The wife hears the commotion, comes out and wants to know what the hell is going on and does everything I do lately have to include personal or property damage.
"Maybe."
Buy a set of green handled aviation snips... the offset kind. Cut to within a 1/8" of your line first, then do the fine trimming ...which is easier with less material to cut away, file to fit. The offset snips are great. I like the Wiss brand. You can twist them around a very small radius without leaving little daggers if you practice a bit.
John www.ghiaspecialties.com
I used blue masking tape from the front side.
I then cut the template out with an exacto knife.
I then put the tape template on the sheetmetal.
In my case, I called a friend with a plasma cutter.
Otherwise, cut close with aviation snips and grind to fit.
Good luck.
I used tin snips a file and a little time
I just found this thread during a search for korijo story. Send me a drawing and I will laser cut for free for clubmember, you pay for shipping. Am I too late or have you commited a metal mistake?
For saving time, use what ever you have handy to trace out and cut out a slightly over size disk and trim to fit on a grinder. You could have it on and tack welded in place in 1/4 the time it takes you to go find or buy the "right" tool and experiment. No matter how perfect the fit you make, your going to be grinding/filing down the extra metal from you welds.
Hi Dave. Still have that engine in the crate.
I smell a classic thread . what do you do with the side marker pimple's wiring harness?
I used Korijo's method. Worked fine The side marker holes are 1.5" in diameter so I bought a 1 5/8" hole saw. The resultant disc fits in the side marker hole with roughly 1/16" gap about the circumference. Remember, a hole saw is measured by the size of hole it creates, the outside diameter of the saw, but we want a disc so it's the inside diameter of the hole saw we want
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