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

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Originally Posted by IC2

During my internet 'wanders' I saw where someone had made a shrinking disc out of common pieces of steel. While not as glamorous as the $50 version, will work well. There are a bunch of threads if you Google.

And for once Randy, trying to SAVE you $$$ instead of the usual

Thanks, Dave!!! I DO appreciate the $$$ saving efforts!!! That's a big change for you!!! I'm so kidding!.....sorta

As Dave said home made will work , you are really just creating heat thru friction , so a home made one would be fine . Dave I like that idea myself . The stainless is just harder and won't wear as bad is all I would think .

Originally Posted by bluestang67

As Dave said home made will work , you are really just creating heat thru friction , so a home made one would be fine . Dave I like that idea myself . The stainless is just harder and won't wear as bad is all I would think .

Bobby - after I 'penned' my response to Randy, I removed a worn out solid edge 7" saw blade from my tile saw and may just see if I can make that into a shrinking disc. There is still a tiny bit diamond grit on the edge, but it may come loose with some heat and may anneal the disc enough to be dished a little bit. Low on my list of things to do though :-/

I have a 4" hole saw and some 16 gauge steel. Could I just cut a disc, drill a 5/8" hole to fit my angle grinder the dimple it a bit and make it a little concave?

Originally Posted by randyr

I have a 4" hole saw and some 16 gauge steel. Could I just cut a disc, drill a 5/8" hole to fit my angle grinder the dimple it a bit and make it a little concave?

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'.

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....