Homebrew PCBs

----- Original Message ----- 
From: "Stefan Trethan" <stefan_trethan@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Tuesday, January 02, 2007 8:02 PM
Subject: Re: [Homebrew_PCBs] Re: First efforts with isolation milling and 
the new machine....


> On Tue, 02 Jan 2007 20:01:01 +0100, John Hansford <kz1927@...> 
> wrote:
>
>> Hi Leon,
>> I'd like to get a Proxxon for my personal machine. I'm trying
>> to decide on a *generic* toolholder for our other machine. The
>> Dremel seems to be most widely availabe 24/7. They've
>> come up with so many variations on it that I honestly don't
>> know what's the good one. John cleared that up for me.
>> I have 4, but they're not as good as my old one was.
>> I see good things on the Proxxon and before long, I'll have one.
>> Thanks!
>> John
>
>
> It must be said that the bearings on the proxxon IB/E are too close
> together. This isn't ideal for side-loads. I expect the new "long throat"
> version would be much better, if they have put the bearings at either end
> (which i hope). A cheap tool construction with a long shaft going from the
> collets all through the motor may actually be better in that regard, but
> the dremel has too many other drawbacks to consider it over a proxxon, 
> IMO.
>
> But the IB/E is well worth the money, i liked it so much i got a smaller
> 12V proxxon for the PCB drill so i could use the IB/E for other jobs
> without having to pull it from the mount.

A die-grinder would be the best thing to use, but they are very expensive. 
They are designed for large side-loadings and very fast.

Leon
--
Leon Heller
Amateur radio call-sign  G1HSM
Suzuki SV1000S motorcycle
leon355@...
http://www.geocities.com/leon_heller