PCB board and Bits /recommendations and suppliers

[richie00boy]

Yes that board is really cheap. Is it 1.6mm thick or more like 1.0mm?

Can you link me to where you get the 30 deg bits from please? As I'm currently paying a tenner each. I'm assuming they are not the flat blade type of thing that seem to be listed on ebay? Mine are the pointy type, i.e. proper V shaped.

[HankMcSpank]

Yes that board is really cheap. Is it 1.6mm thick or more like 1.0mm?

Can you link me to where you get the 30 deg bits from please? As I'm currently paying a tenner each. I'm assuming they are not the flat blade type of thing that seem to be listed on ebay? Mine are the pointy type, i.e. proper V shaped.

I've just measured the board thickness - it measures just over 1.6mm thick. Being paper based (btw, don't let the sound of that put you off, it's extremely strong - but is is very brittle so don't be going bending it too much), I find inhaling the inevitable dust thrown up a far more enjoyable experience vs. fibre glass particles (I had an unexplained lung abscess a couple of years ago, which developed into pneumonia....I can't but help thinking it was fibre glass dust becuase just a couple of weeks prior, I'd had an FR4 milling frenzy!)

Here's an example of the bits I'm sourcing from ebay (not sure if it's the exact seller, but they're all much of a muchness)...

10 Carbide PCB Engraving Bits CNC Tool 30 Degree 0.2mm | eBay


These normally come with either 0.1mm end or 0.2mm tips - obviously 0.1mm gets your tip into finer places....but for my money the 0.1mm tip shreds away too easily...if you're not after SMD type isolation milling, I'd say go with a 45 degree or even 60 degree bit.