Anyone ever use the stainless disc on a grinder (for heat ) and a spray bottle with soap/water ? I saw it on e-bay the other day , seems to be reasonably priced if it really works as well as it does in the demo video . How long do these discs last ? They are made for the oil can dent / heating streched metal and maybe alittle more forgiving than a torch . thanks rg

 

I saw an article on it somewhere and they say it works better than the torch and you'll end up with a better finish. as for how long they last I have no Idea. What was the price on that on ebay??

 

Yeah u can google it and find a few articles on it. The disc heats the metal 600-1200 degrees, and is supposed to work better for that fact cause its a slower controllabe heat, everything i've seen on google says,they seem to think it works good, might even have to try it myself!!

 

The shrinking disc is freaking amazing. I just found out about them last weekend, while researching the topic. I'm presently trying to reshape an '88 hood to a '92-96 style. It would take at least a week and twice the price to order from the States, so I made a 6" disc from 18 gauge stainless steel.
I got the curve halfway out by stretching the lower area, but it needs major shrinking to flatten out the hood. The disc just tightens everything up.
Today, I was working on the fender and in a 4x6 part at the bottom, I had a high spot. It to 30 seconds with the shrinking disc and the spot was flat.
As for how long it lasts, if it's just for the backyard body guy, probably a lifetime.
This is what I started with.


After hours and hours with hammer and dolly, I still has a significant high spot at the top of the curve. After an hour with the disc and some dolly and hammer work, the outer section was exactly where I wanted it.



I don't own a 7" grinder for the 9" disc and the 4.5" is just too small, so a 6" on my 5" grinder is perfect. It does not put any more load on the grinder than a typical sanding disc and is about the same for noise level.

 

Sweet i'm gonna have to try that, good stuff ur the first guy i've heard of on here whos actually used one. Good work!

 

Sorry I have not posted pic of door yet.Still trying to get a photo of it.The wife says she will try to get one tonight.Sorry for the delay.
ART

 

Now I am showing my age....

My dad is an ol time paint/body guy from the 40's/50's where lead fill & heat shrinking metal with a torch was 'common". He showed me (back in the 60's) the technique of using a grinder to heat & shrink metal in a variety of applications- I have used it on many vehicles with complete success. it is especially good for the "skilled amateur body guy"- because the process does heat the metal slowly and it makes it difficult to over do it.