reloader45
Active member
- Joined
- Mar 17, 2019
- Messages
- 172
- Points
- 28
Hello,
I finished my first copper heatsink for a 5,6 mm laser Diode. I drilled a 5,5 mm hole, followed by a light cut in my lathe.
With the digital caliper, i measured a Diameter of aprox. 5,60 mm.
I had luck, that i got a pressfit of my Diode in this heatsink.
My question is, how much is the ideal undersize of the bore for a pressfit in a copper heatsink?
Is it 1/100 mm, 2/100 mm or more?
I ask this, because i will grind a "reamer" from a 6 mm milling cutter.
Or is it the better way to drill the copper to 5,5mm and than calibrate the hole with a hardened steal rod on a hydaulic press?
best regards
Edgar
I finished my first copper heatsink for a 5,6 mm laser Diode. I drilled a 5,5 mm hole, followed by a light cut in my lathe.
With the digital caliper, i measured a Diameter of aprox. 5,60 mm.
I had luck, that i got a pressfit of my Diode in this heatsink.
My question is, how much is the ideal undersize of the bore for a pressfit in a copper heatsink?
Is it 1/100 mm, 2/100 mm or more?
I ask this, because i will grind a "reamer" from a 6 mm milling cutter.
Or is it the better way to drill the copper to 5,5mm and than calibrate the hole with a hardened steal rod on a hydaulic press?
best regards
Edgar