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  #1  
Old 07-04-2020, 04:55 PM
sblack sblack is offline
 
Join Date: Dec 2009
Location: Montreal
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Default Dimple die specs

I have 2 or 3 holes that need to be dimpled right near an edge. I need to grind down the edge of my female #6 screw dimple due. I don't feel like destroying it for just those few holes. I have a lathe and I could make a female die that would be good enough if I knew the correct dimensions. I expect they are not exactly 100deg because of spring back and there are likely other subtleties that I don't know about. Google did not turn up anything. Anybody have any info?
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  #2  
Old 07-04-2020, 06:16 PM
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wirejock wirejock is offline
 
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 3,947
Default Flat side

Quote:
Originally Posted by sblack View Post
I have 2 or 3 holes that need to be dimpled right near an edge. I need to grind down the edge of my female #6 screw dimple due. I don't feel like destroying it for just those few holes. I have a lathe and I could make a female die that would be good enough if I knew the correct dimensions. I expect they are not exactly 100deg because of spring back and there are likely other subtleties that I don't know about. Google did not turn up anything. Anybody have any info?
Every one of my female dies has a flat side. Grind away. Just dont grind into the dimple face of the die. Or buy a set of close quarters dies.
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  #3  
Old 07-04-2020, 06:43 PM
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PaulvS PaulvS is offline
 
Join Date: Aug 2019
Location: Western Australia
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Default Countersink cutter

For occasional use, I've made some female dies using a 100 degree countersink cutter. I don''t have a lathe. The die piece was made out of some mild steel flat bar and can be used with a squeezer by holding it in alignment while dimpling. It worked well enough for me.
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  #4  
Old 07-15-2020, 09:50 AM
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clevtool clevtool is offline
 
Join Date: May 2006
Location: Boone, Iowa
Posts: 342
Default Die Specs

I just happened across this following another thread...

As others mentioned you can grind a side or countersink a piece. Grinding the side on the female won't affect the springback much.

If you countersink with your 100deg countersink to 0.317" across the top, then use emery cloth to just barely break the sharp edge, you will be very close. (you are right it's not quite 100deg ).
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