AW: little OT : drilling pcb's

[Martin Czech]

:::> Sorry : I forgot:
:::> 
:::> I use a Proxon hand drilling machine with a small precision 
:::> stand/press.
:::> Proxon sells 1mm drills with enhanced shafts (3mm or so).
:::> 
:::> I never have any problems (other then dust and toxic fumes).
:::> 
:::> You can get that in any tool shop / mall.
:::
:::I know, I use also Proxxon with the same 1mm drills ("hard-metal" in a
:::word-by-word translation, I don't know how they say in USA/UK/AU)
:::The only thing, I don't have is a precision stand. 
:::Could that be the reason for the problem ?
:::Must the drill be EXACTLY positioned ? 

quite, yes. Otherwise the drill will be bend, and finally break.
Just look at it while drilling.  I used a simple plastic stand for years,
no problems. I always used FR4, no problems. The Proxon metal stand is
better for metal plates, enough force...

Are you sure that you choose the right rpm?

btw.: I don't think that Pertinax base material is much healthier than
FR4 or other glass epoxy. There's also toxic dust, and they smell awfull,
even if no work is done (gases, Formaldehyd (sp?)).



m.c.