Looks very clean. Do you have any pics of the tool in progress? I've never seen it done before.
Most certainly . . . there are many ways that this can be done, but this is how I came up with "my plan" to get them done . . .
First of all, you have the dimple dies . . . the one on the right goes into the hole and the one on the left sits on top of the protrusion - when the 2 parts are compressed together
As seen here - this is how the parts go together - to form the bend that you see . . .
Compression can be:
- using a C-clamp
- using a shop press
- you can run a bolt through the hole and tighten up a nut
- plenty of ways to make the compression . . . but I came up with a neat little "trick"
First we need to make a hole in the metal . . . this could be the "fun" part . . . but bear with me . . .
Cutting the hole . . .
- you can use a hole saw, but the hole edges will not be very "clean" when you're done . . .
- but to accomplish my "trick", I need a hole in the metal to proceed . . .
So I drill a hole in the metal with a hole saw . . .
Now for the most important part of this process . . . this is a Greenlee tool, that I borrowed from my friend, it's used to cut holes in panel boxes for electrical installations.
- the tool is hydraulic ( see the handle with the green cover on it )
- now to start with the setup . . .
I've inserted one of the stems from the box ( top row, third from the left ) into the end of the tool
- then the cutting die is threaded on the end of the stem . . . ( showing a closeup of the cutting area )
Now to get it set up properly, the metal is placed between the 2 dies as follows
- when you pump the handle the cutter on the right is pulled into the cup on the left . . .
after the "cut" is completed . . . you'll have the following . . .
- a very "clean" cut hole in the metal
- (2) half moon shaped cut out that were pulled into the cup
- you release the pressure, unscrew the cutting head and you have the following . . .
Now all that you need to do - is get the dimple die parts set up as follows
- and apply pressure to squeeze them together
- and the result is as you've seen above ( but how to accomplish it ? ? ? )
The cutting tool works with hydraulics . . . so I wondered . . .
- would it work ? ? ?
- So I set up the dimple die in place of the cutting dies ( had to figure out a way they would all be supported properly )
- and cam up with the following stack-up . . . ( notice the cutter is on backwards on the end to pull against the inside die )
Now, just pump the handle and pull the stem in, causing the dimple dies to compress the metal until they meet ( and can't go any further )
The use of this tool was what allowed me to do the process on the car with relative "
ease" . . .