Thread: My first ever CNC cut PCB
Time to dump good old chemicals, no more classic etching way !!! DIY CNC mill can do it faster and more precise. Small PCB for LM350 adjustable voltage regulator as a power supply for watering system (standard battery power supply with 2xAA doesn't last long, so this time I hope no wife complaining her flowers have died ). Maybe a bit too deep(0.5mm), but it exceed my expectations anyway
looks sweet that mate.there is no such thing as a stupid question, just stupid answers !!!!
A bit deep?
Looks like you've carved a few grand canyons in that pic!
Looks very tidy though.
Looks nice but ... "Your only supposed to blow the B***y dorrs off" so to speak.
Pictures nice anyway!
Not Bad, been doing pcbs on a cnc router for a while now. Would advise a depth of 0.14mm using the 60 degree Zrn Coated 2 flute bits from precisebits.com. Works perfectly for my stuff. The standard v carve bits only last a little while where as these bits last me for around 40 boards if cared for.
Oh and a good tip if some tracks are connected is get a 12v power supply, connect the positive to the board and tap the negitive on each track, it will either spark where the connection is or melt the connection completly, saves loads of time compared to going around the tracks with a stanley knife believe me!
Even better in my opinion is to use a very small endmill, say 0.5mm or less instead of a V-cutter, then the height is not an issue. Also I think it would leave less burrs than a V-cutter, although I've found that using the 25mm/min per 1000rpm spindle speed rule you don't get many burrs.
I was just browsing for relevant posts for my project and I happened to stumble upon yours. That is a very cool idea ! I am also thinking to throw away chemicals and that odd stuff !!
How much does this CNC machine costs ? I am planning to get one for my hobby circuits. because through prior way it takes too much time to make one !!
Last edited by davejo; 05-10-2012 at 02:47 PM.