OSS or Grinder? Regardless it is restored.

**Kudzu** · 21st October 2007, 05:05 AM

Interesting little machine that found me.

I have been looking for a nice old cast arn oscillating spindle sander for while. The good industrial models are pricey and hard to mind. Then this one came along at a very attractive price! I paid a bloke the gas to pick it up for me!

Never heard of the brand and I pretty sure it was grinder, not a sander. But it oscillates and it gong to make a fine spindle sander. Here are a few quick photos.

As it was brought to me.

I has a rather unique operating method. There is a small gear motor that operates a cam under the motor. This came lifts the armature in the motor causing the oscillating action of the spindle! Obviously the motor was designed for this. It's an old style Repulsion/Induction motor so it is very high tourqe.

Here are some photos it now. I am almost finished. Just need to wire up the switches and find some drums for it and it's ready to go.

For those that followed along on my other two machines I got stalled on the bandsaw and have not yet finished it. I had a need to do some woodworking. I have built a couple of pieces and about to get back on that finish it up.

**DJ’s Timber** · 21st October 2007, 09:43 AM

Fantastic score

, looks great now

**fred.n** · 21st October 2007, 08:39 PM

Very nice work on the restoration

**China** · 21st October 2007, 09:58 PM

Great restoration job, I saw one some years ago in a custom engine builders sshop he used it for grinding the web off conrods

**Bondy1s** · 21st October 2007, 10:04 PM

Excellent work

**Kudzu** · 22nd October 2007, 12:18 AM

Originally Posted by China

Great restoration job, I saw one some years ago in a custom engine builders sshop he used it for grinding the web off conrods

Thats very interesting. I can find nothing on this or what it was designed for. Always though it was meant for metal working because the RPM's are a bit high for woodworking. A friend suggest it might be for Tool and Die work. Maybe metal polishing, which makes sense to me.

**smokey2** · 27th October 2007, 11:03 AM

Obviously a jewel grinder for cutting gemstones. Talk to the opal guys and I think they will know exactly what it was built for.

I will get some photos of some of my old junk and put it up here when I have time.

Forgot about the small combination Jointer/Bench saw I picked up on the side of the road in Caulfield - left for kerbside collection. No blades, motor or bolts holding it together. Missing a piece from the jointer table which I think I can fabricate. Probably some old guys pride and joy prior to his despatch to the next world.

**scooter** · 28th October 2007, 12:52 PM

Noticed the high rpm too, be careful it's not too high for the work you're doing or the tooling needed.

Cheers.............Sean

**Caliban** · 5th November 2007, 10:16 PM

Sometimes I think there might be advantages living in the land of the brave.
Ah, don't worry about me, I'm just jealous of your scavenging skills.
I loved your last restoration and this one looks great so far. Good luck with the rest.

**Chris Vesper** · 30th November 2007, 02:22 PM

Wow what an unusual machine, it's a nice thing! Good job on the restoration.

I wouldn't worry about the PRM of it. After you read the rating plate-dont forget it is a Seppo made machine and they run on 60Hz 110Volt over there, so here in Oz on 240V at 50 Hz it in fact only peaks at about 2950 RPM.
I have a generic Taiwanese OSS that runs at a fixed 1500 RPM and I find it a bit on the slow side sometimes. I've seen some OSS in the patternmaking game that go up to about 10,000 RPM for spinning little spindles like less than 12mm diameter. So I reckon 3000 RPM is nothing!!

**NCArcher** · 30th November 2007, 02:46 PM

Originally Posted by Chris Vesper

I wouldn't worry about the PRM of it. After you read the rating plate-dont forget it is a Seppo made machine and they run on 60Hz 110Volt over there, so here in Oz on 240V at 50 Hz it in fact only peaks at about 2950 RPM.

Check Kudzu's location Chris.

Kudzu, again nice job on the restoration. Looking forward to the next one.

**Chris Vesper** · 30th November 2007, 03:07 PM

Duh'oh!!

Sorry I was in Australian forum mode... forgetting the fact that this is the WORLD WIDE web... Still at 3500 RPM, its just purring nicely...

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