Thread: '38 Ford deck lid vs 37 Ford deck lid

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Originally Posted by IC2

That angle grinder will be too fast - mine runs at 11,000 rpm - and will end up burning. The hole saw might come apart at the weld. I would be using my big Hitachi grinder/polisher which runs 600-3600 rpm and probably at some speed around 2000 or where ever it 'felt right'.

Hey Dave, just for clarification, I was only going to use the hole saw to cut out a 4" disc, not as part of the shrinker. you know, sorta like eating the donut hole instead of the donut...

One of the sites suggested taking the shrinking disc up to 6000rpm for faster heating of the area.

I have a Makita 5" disc sander that runs 4500rpm. If I can figure out a way to make a disc for that it might work well. Will let you know....