One of the things I hate the most about building an amplifier is mounting the PCB and outputs by drilling and taping. I feel like it is the longest and most stress inducing part of the whole process. Are there any guides or tips you guys have that might help make the whole process better?
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Use the pcb itself as a template for locating holes.
Avoid tapping, and instead use through holes where possible.
Also, use the PCB as a template before you stuff it! That way it sits flush yo the mounting surface so the holes line up accurately.
I have no problem with tapping holes in heatsinks, and I don't have a drill press.
I have no problem with tapping holes in heatsinks, and I don't have a drill press.
Use pcb as a template.
Drill first hole at one end then put a tight fitting screw and nut through hole in pcb and heat sink to centre things.
Then drill hole at opposite end of PCB and again put a tight fitting screw and nut through hole.
Continue until all holes are drilled.
TO3 can be a pig but a similar technique works.
For the 2mm transistor leg holes I used a battery drill (not a drill press!) as this can be put in hole before turned on to line up exactly.
I then unbolt the pcb and drill out holes to required width for right clearance.
The first one is always the hardest, after that you become an expert.
Drill first hole at one end then put a tight fitting screw and nut through hole in pcb and heat sink to centre things.
Then drill hole at opposite end of PCB and again put a tight fitting screw and nut through hole.
Continue until all holes are drilled.
TO3 can be a pig but a similar technique works.
For the 2mm transistor leg holes I used a battery drill (not a drill press!) as this can be put in hole before turned on to line up exactly.
I then unbolt the pcb and drill out holes to required width for right clearance.
The first one is always the hardest, after that you become an expert.
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