Re: [CAD_CAM_EDM_DRO] Re: die grinder

I want to use my Max NC for pcb drilling, I understand that
speed and lack of play are prerequisites for long life of the
drill. With that in mind, I don't think I would start with a used
spindle when new ones are in the $20 range. I have had
excellent results from the 4 inch angel head grinders. I
am gathering parts for a CNC router and plan on using
the harbor Freight trimming router for the spindle.
bob mcknight

> The inexpensive ( and a few of the more costly ones)are not very
> suitable for long service with side loads.. bearing quality is one
> thing, the long spacing between bearings is another. I have
> several of the HF ones I have eaten several pricey 4.5"

grinders

> ( same drive end) and use the HF ones now. They are as good as

some

> at 5+ times the price but don't expect too much from them. As it
> is I am happy with them for my uses -- occasional portable

grinding

> . The heavy duty router systems are better for the router

service

> .. as are the heavy duty pneumatic ones.

Fair enoughm but my needs are drilling only and if the side load is a
problem, it may be that they can be end loaded.

PCB drilling is what I'm after.

Dave





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