Homebrew_PCBs

----- Original Message -----
From: "Richard" <Richard@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Thursday, November 03, 2005 12:51 PM
Subject: [Homebrew_PCBs] Advice on choosing the correct drill / stand for
PCB drilling ?


Hello everyone

Having always used a hand electric drill in the past, together
with standard HSS drill bits, (wear out too quick), I want to upgrade.

I'd like to purchase a drill with stand, so Tungsten-Carbide bits can
be used and generally make a much better job of drilling holes :)

Drill Stands : I've looked at the Dremel 220 'workstation' / Proxxon &
Wolfcraft stands, all at about £35...

As for mini drills, there are lots to choose from, but what is the best
combination at a reasonable price (£50ish) in users's experience ?

Proxxon is supposed to make the best drills, they have less runout (better
bearings) than Dremel and Minicraft. I use a Minicraft drill and stand which
works OK, but can break tungsten carbide drills if I'm not careful.

Leon

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> Hello everyone
> Having always used a hand electric drill in the past, together
> with standard HSS drill bits, (wear out too quick), I want to upgrade.
> I'd like to purchase a drill with stand, so Tungsten-Carbide bits can
> be used and generally make a much better job of drilling holes
> Drill Stands : I've looked at the Dremel 220 'workstation' / Proxxon &
> Wolfcraft stands, all at about £35...
> As for mini drills, there are lots to choose from, but what is the best
> combination at a reasonable price (£50ish) in users's experience ?
> Many thanks for any advice
> Richard

----- Original Message -----
From: "Stefan Trethan" <stefan_trethan@...>
>> Having always used a hand electric drill in the past, together
...
>
> I use a proxxon IBE grinder. The bearings are good, but close together so
> not so good for side-loads (none when drilling).

I think I just found a use for the RotoZip. It's not quite a dremel, and not
quite a laminate trimmer. I didn't know what to use it for, but I bought one
anyway based on the TV ads some years back. Simply prophetic in hindsight.
:)

I also have a small linear guide and a cute-as-a-button ballscrew that were
too small for every other job that might have used one. They too, I think,
just found a purpose. The ballscrew and stepper might be a bit over the top,
though.

>
> I think I just found a use for the RotoZip. It's not quite a dremel, and
> not
> quite a laminate trimmer. I didn't know what to use it for, but I bought
> one
> anyway based on the TV ads some years back. Simply prophetic in
> hindsight.
>
> I also have a small linear guide and a cute-as-a-button ballscrew that
> were
> too small for every other job that might have used one. They too, I
> think,
> just found a purpose. The ballscrew and stepper might be a bit over the
> top,
> though.

----- Original Message -----
From: "Stefan Trethan" <stefan_trethan@...>
> Is this a rotary saw? Nobody buys them here because they seriously messed
> up the TV ad (they tried to demonstrate it but every bit they put in broke
> when touching the work, on several machines.).

That's the one. :) I bought one, cut a hole in the wall for the novelty of
it, and then promptly tossed it under the workbench. It looks usable as a
spindle for a micro-mini-mill-drill. 30k RPM, pretty solid 1/8" collet, huge
cooling fan. The housing is FRP, pretty flexible, so a really rigid mount
will be wasted. A split clamp around the throat and a single 4mm screw in
the handle mount lug, 5" distant, should suffice for light drilling. (A few
small steppers and a Taiwanese XY table will make a usable CNC drill. I'll
see about a Kavo and ER-16 collet after/if this toy burns out.)

BTW, I use their down-cut spiral bits in the laminate trimmer and router for
rough cutting MDF and plywood. They're cheap and last long enough that I
forget how much I paid for the last 10 pack. Ironic, isn't it? It saves the
good carbide for real work.