davidzo:
Using drills smaller than 3mm wont work for me. Neither is changing the material. 10mm copper is all I got.
You have made me lean more towarda a side-to-side block with finns over the core though.
What if i made just 5 or 6 rows 30mm long over the core?. (Base will still be 3-4mm. Less than that and I have to get thinner raw material)
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