'melted' tape roller

From: Tom Jennings <tomj_at_wps.com>
Date: Wed Feb 4 14:29:51 2004

On Tue, 2004-02-03 at 16:05, Tony Duell wrote:

> You might find an 'idler tyre' for a VCR would work if you can get one
> the right size. You want to go to a _good_ VCR spares/repair place and
> see if they can match it up.

YOu can also turn rubber pretty easily on a small drill press. The real
chore is to chuck it so it rotates concentrically. I've had to
manufacture a new rubber anvil wheel for a 1920's Western Union machine,
a tire about 2" diam x 1/4" wide. Came out quite nice.

I got some 60-durometer neoprene sheet (from Industrial Metal Supply,
Sun Valley CA), chopped it roundish, hole-sawed it (large hole) and just
jammed it over a giant mill bit.

It's rubber; it grips. If the tape drive spindle that the 'tire' fits
over is say 1/2" diameter, drill a slightly smaller hole in the rubber,
and chuck a 1/2" 'thing' in the drill press. Press the tire on. It won't
grip hard, but enough for engine turning.

Turn the drill press on, and use a rough file to get it the right size
and shape. Then apply sandpaper on a wooden block. Can't use much
pressure else the tire flies off.

I used the drill press table as a hand rest.

You can get the surface nice and smoothly rough with sandpaper.


> I don't think an O-ring is very suitable here, you want something with
> a rectangluar cross-section.
> I believe classic car restorers use a 2-part 'rubber' compound to make
> thigns like pedal rubbers, seals, etc. I wonder if that could be used to
> make rollers, etc. Making the moulds would be fairly easy in a reasonable
> home workshop. Anyone know if said compound is available in the UK?
> I've got a roller to rebuild sometime. The platten roller for a Versatec
> V80 electrostatic plotter. It's turned to goo. This is a full-size
> platten, in 2 parts, with differential gearing between them (to keep the
> paper running straight!). Should be 'interesting' to repair...
> -tony
Received on Wed Feb 04 2004 - 14:29:51 GMT

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