Homebrew PCBs

I have used O rings for belts they can work in a pinch

 

 

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Tuesday, February 16, 2016 8:48 PM
To: Homebrew_PCBs@yahoogroups.com
Cc: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap:

 

  

On Tue, 16 Feb 2016 19:52:19 -0500, you wrote:

>A friend of mine used to use something called a unimat to drill his boards.
It was belt drive,but also converted into a lathe. I borrowed it when I did
some boards a long time ago
>

It's very precise, a combination of lathe, drill press, and almost
anything else. It's also quite expensive since it is a collector's
item at this point. 

Its weak point is also the strong point, versatility. However, every
setup needs to be squared and trued. It has minimal capacity, but can
do beautiful work when properly adjusted.

The belts have limited life and are somewhat annoying to find
replacements for.

It can be a very high speed drill press, about 15K RPM IIRC.

Harvey

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>From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
>Sent: Tuesday, February 16, 2016 9:58 AM
>To: Homebrew_PCBs@yahoogroups.com
>Subject: [Homebrew_PCBs] Re: Drilling circuit boards on the cheap: [1
Attachment]
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>This is what I use for small boards. It only has about an inch and a half
throat but is very stable. I think it was used by clock makers but there is
no information available for it.
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