I've been reading HR archives looking for more detailed heat shrink methods. I could use some better descriptions of how much heat to apply with oxy/acy torch to try to shrink by water quenching. What color of heat on the panel; as this thread says to stay away from red? ( I have done very minor quenching on a beater fleetside by using a mig on the backside of the panel...so I have seen how quenching works..sort-of)
http://www.hotrodders.com/forum/heat-shrinking-95768.html?highlight=shrinking+disc
My 32 5/window rear quarters are really wavy. The car must have rolled, and then they cut off the top to build a roadster. It has conduit welded along the top of the quarter which is coming off today, plus it had a rust repair patch put in at the bottom. I've got waves everywhere caused by that plus the bead around the rear tire well had been pushed in & hammered out, but not quite enough. The "entire" quarter had 1/16" to 3/16" of mud.
Some of the bulges are compact and look easier to shrink, but some raised areas are very large (over a foot in diameter). I'll start by removing the conduit to take the stress off the top, and also reshape the wheel opening bead. But I know I'll still have some major raised areas.
I will start the shrinking at the rear of the quarter where the areas are in between body beads to help me, but how & where to start on the large area?....and what about the temp of the torching? I do have very small tips & medium ones for the torch...which is best?
I don't have a stud gun for heat, nor a shrinking disc (yet). I can see a disc working on some of the smaller bulges, but I am nervous about getting into the middle of the quarter. Any hints?
.
http://www.hotrodders.com/forum/heat-shrinking-95768.html?highlight=shrinking+disc
My 32 5/window rear quarters are really wavy. The car must have rolled, and then they cut off the top to build a roadster. It has conduit welded along the top of the quarter which is coming off today, plus it had a rust repair patch put in at the bottom. I've got waves everywhere caused by that plus the bead around the rear tire well had been pushed in & hammered out, but not quite enough. The "entire" quarter had 1/16" to 3/16" of mud.
Some of the bulges are compact and look easier to shrink, but some raised areas are very large (over a foot in diameter). I'll start by removing the conduit to take the stress off the top, and also reshape the wheel opening bead. But I know I'll still have some major raised areas.
I will start the shrinking at the rear of the quarter where the areas are in between body beads to help me, but how & where to start on the large area?....and what about the temp of the torching? I do have very small tips & medium ones for the torch...which is best?
I don't have a stud gun for heat, nor a shrinking disc (yet). I can see a disc working on some of the smaller bulges, but I am nervous about getting into the middle of the quarter. Any hints?
.