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Sagar sander restoration

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Sagar sander restoration

Postby wallace » 19 Jul 2019, 19:42

I had the good fortune to visit an old foundry to buy a couple of machines recently. This is one of them. Its quite a nice little thing with a bobbin on the backside.

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I really like these old isolators

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I didn't think it wise to plug it in

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First balls up

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The sandpaper is held in place by a ring with wing nuts on the stretch the paper over a cork insert.

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Original colour very similar to wadkin

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A nice brass makers tag which should look good once tarted up

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A pretty neat way of holding paper for the bobbin

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I don't get the four plugs in the ends bells, on one end their is brass plugs pressed in and on the other end theirs pig threaded plugs.

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Re: Sagar sander restoration

Postby wallace » 27 Jul 2019, 13:46

A bit more done.
The motor back together sanded and primed

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A box of bits ready for cleaning

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A soak in that magic evaporust stuff

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a quick clean on the wire wheel, then in the blackening solution

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A liberal splash of wd40

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BIts sanded and primed

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Primer helps to highlight bits that need more bodge

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The table was pretty rusty but cleaned up nice with very little pitting

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I found his under the rust

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Re: Sagar sander restoration

Postby Malc2098 » 27 Jul 2019, 13:54

Nice.
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Re: Sagar sander restoration

Postby Robert » 27 Jul 2019, 23:35

As always I'm enjoying watching another transformation so thanks for posting.

I can kind of guess the scale of this thing from the pictures but having seen the finished motor sitting on a stool it looks huge so I'm not so sure. What diameter is the disc?
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Re: Sagar sander restoration

Postby wallace » 28 Jul 2019, 09:16

I think its about 18"
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Re: Sagar sander restoration

Postby wallace » 02 Aug 2019, 09:14

A bit more done. This is the casting I dropped.

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To keep it in place I glue it together

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Then drill and tap

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Of coarse the sole goal of a small tap is to break

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Not pretty but secure and filler can hide anything

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The isolator has been bashed at some point and is close to dropping to bits

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Mig to rescue again

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I got a bit paint on bits

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The switch is in reasonable condition inside

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I need to find a source for 6mm cork or rubber to repair the disc

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On a different note I've had this apple tree root ball sat around for a couple of years. I was hoping to stick it on the lathe and see what comes out. I wonder if this fungi will improve it or eat it

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Re: Sagar sander restoration

Postby Malc2098 » 02 Aug 2019, 12:33

Nice.
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Re: Sagar sander restoration

Postby Robert » 02 Aug 2019, 16:09

Is yours a proper Mig with a C02 or COOGAR bottle or one of those gasless ones? I've only used gas Mig in the past. Gasless seems an option for home use but I wonder if they are any good.

I'd normally turn to ebay for small amounts of sheet rubber (maybe cork too).
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Re: Sagar sander restoration

Postby 9fingers » 02 Aug 2019, 16:45

Based on 1000 rpm motor and 18" disc, my back of envelope suggests over 4500 fpm at the edge of the disc.
Surely this will burn the wood very easily and yet be running at a snails pace totards the centre of the disc.
This make me wonder how and what these mammoth disc sanders would be good for. Maybe they are more used for metal?

Bob
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Re: Sagar sander restoration

Postby wallace » 02 Aug 2019, 18:36

Robert my mig is a Clarke one with a little tube for using them hobby gas bottles. The CO2 bottles don't last long. One thing I did experiment with and was really impressed was using bronze wire for electric brazing. You have to use pure argon as a gas but the results are good for novice like me.

Bob they usually have really coarse paper on, like forty grit. If the peripheral speed is high what about wadkins 3O or 36" disc sander. They were pattern shop machines presumably for fast removal of wood
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Re: Sagar sander restoration

Postby wallace » 11 Aug 2019, 13:30

Finished. I got some self adhesive neoprene for the wheel

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I got the foundry where I got this from to cast me some double mitres for the pk, out of bronze

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Re: Sagar sander restoration

Postby Robert » 11 Aug 2019, 15:35

Excellent job as always :)

Have you amazed the people at the foundry it came from by showing them the pictures of how it looks now?

And I hope you'll share what those castings look like when finished..
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Re: Sagar sander restoration

Postby Rod » 11 Aug 2019, 17:37

Lovely work and great that you are bringing these machines back to life.

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Re: Sagar sander restoration

Postby Malc2098 » 11 Aug 2019, 19:46

Nice.
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