I'm finning / grooving a head. Suggestions on fin / groove thickness and spacing?

[Bucket]

@allan d

A lot depends upon the depth of the fins. Thinner fins can mean more fins and more surface area for heat transfer. I have made fins about .100" thick but probably not as deep as you can go with a 3" diameter. With that size I am thinking .125" fin thickness.

Alan, I didn't consider finning when I started this build. I made the pill already and it's giant, so I don't have a lot of depth to fin. If I ever make a second one, I'll make a smaller pill so that I can make deeper fins. For this one the fins will be about a quarter inch deep.

Here is the build thread. https://budgetlightforum.com/t/-/23553

The copper core in the pictured pill is 5/8" for reference.