Technical Sheetmetal Hole Countersink Tool NEEDED

Every closed car in the "HAMB Era" has inside window trim or garnish moldings held in place with screws. These screw holes are countersunk, there has to be a tool out there that can produce the countersink if you add a new hole, I've spent a good hour searching the internet and I guess my vocabulary is lacking the proper name in my searches. The HAZET 1932-6 is close, but I can envision a two piece fixture somewhat like a tarp grommet installation tool that could get the job none. Different size holes & screws will need different size tools. Someone else before me had this problem, who has the answer today? Thank you for your help! Bob

 

If you have access to lathe you can make . For press or use with bolt to for make like a Dimple Die
I am sure originally its was in die when stamped .
Or form with miniature jewelry torch set

 

DIMPLE DIE!!!!!!!!!!!!!!!!!!!!! Thank you 19Eddy30!

 

Those big tool catalogs are great after you finally figure out what you want is called!

 

I made a quick one on the lathe once; drilled/tapped for 1/4"-20 and an 82-degree countersink for the particular application, then used a flat-head allen countersunk screw to create the dimple I needed.

 

A flathead allen bolt, tightened into an oversize washer (or 2 for depth) does the job, in a pinch.

 

Try www.browntool.com They're an aviation tool supply company in Oklahoma City 800 587 3883

 

Many times I’ve used the screw that I want to use, and tap it with a hammer into the steel, backed up by a deep socket. The drilled hole should have the minimal ID hole that the screw will go into because it will open up a bit while countersinking.

 

I've made dimples with
a hydraulic press
a manual press
a tarp grommet tool
a drill press
a hammer and socket
a modified electrical knockout tool
You can dress a male dimple tool by grinding round stock in a drill press or just use a ball bearing and a hammer.

 

I recently needed some conical washers. Turned some s**** in the lathe and then to the press. Started with 5/16 x 1-1/4 stainless fender washers.

 

Here’s a simple way to

 

Using a threaded rod coupling nut & the appropriate flat head machine screw counter sink one end of coupling nut to use as the shaping die, insert & tighten the flathead screw to create the dimple as needed, the coupling nut should provide enough length to secure it in a vise to provide sufficient cranking torque, can also with care be used as a hammer die.

 

Bob, Stinkity stoink has the most basic method I've seen. Maybe easier, if you don't have any correct tubing, is to drill the appropriately sized hole in a piece of s**** steel that will fit inside the molding and even better if you can countersink that hole. Use an oversized screw to drive in the taper.
You may not have a lathe, etc but you don't need one. This is a "...give it here and move over" job now.
Please don't go buy tools for a one off job like this.
Let us know what you do and how it works for you.
D

 

some vendors list dimple dies as "hole flaring" dies, might help searching

 

I just used a center punch I ground to the shape I wanted on my belt sander. Then chucked it in my big drill press and after drilling a hole in the sheet metal I used the drill press turned off like an arbor press to push the punch into the hole. Works great and the punch is still a punch when done. I used a 2x4 block with a hole drilled in it as a backer.

 

Drill your hole, use a wider center punch, or ground down some round stock to the taper you want, use a socket or piece of hollow tube under it, give it a wack with a hammer. Done it many times!

 

Eastwood has this set

 

Try Amazon: search - numerous options and reasonable prices on many.
Sheet Metal Hole Punch and Flare Dimple Die Set