Hoffman Amplifiers Tube Amplifier Forum
Other Stuff => Your other hobbies => Topic started by: galtjunk on January 12, 2023, 05:59:53 am
-
I have a cnc router that I built for machining aluminum.I would like to use it for cutting and drilling fr4/g10 boards.I have a bunch of 1/16" board.I can't find any information on machining these boards.What speeds, feeds and bits do you use?
-
Solid carbide bitsShort machine screw bits
You just have to see what works on your machine for feeds and speeds
-
Thank you.
-
For example:
Here is a standard 3/32 jobber drill bit
And a Solid carbide 3/32 drill bit with a 1/8" shank
I use only carbide bits in my CNC for all G10/FR4 drilling
My spindle uses collets to hold the carbide bits
-
I was thinking of machining the outline of the board and the holes in 3 different sizes using a 3/16 mill bit.I don't know how hard fr4 is on the bits.
#4 or #6 for the mounting holes, 3/16 and 1/8 for turrets and eyelets.I guess drilling is a reasonable option.
I use eyelets for snap caps and turrets for most everything else.High voltage axial electrolytics are getting expensive and hard to find so snap caps seem to be a good way to go.I guess I can drill all of the holes 1/8 and either change bits or resize the the other holes manually.My router has an 800w water cooled spindle so it should be up to the task.
-
Just use carbide End mills and drills and you won't have any problems machining the material
You just have to see what speeds and feeds work best without burning the material