Polishing / Tumbler medium

Polishing / Tumbler medium

This topic has 4 replies, 3 voices, and was last updated 2 October 2016 at 10:28 by Nick_G.

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2 October 2016 at 06:51 #258792
Nick_G
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@nick_g
.

Ola'

I have a few small parts that I would like to polish. In this case they are rockers for an IC engine made from key steel. (basically en8)

I have seen on the net a video of somebody putting small parts into a glass jar along with some medium and turning / tumbling in a lathe by fixing the metal lid of said jar into the lathe chuck to polish them.

But I don't have any tumbling medium and neither will I want to do this on a regular basis. – So is there a 'house hold'' substitute that will do the job.? I realise this will take longer that using proper medium.

I did consider perhaps using uncooked rice but this is probably far, far to soft.

Cheers, Nick
Advert

2 October 2016 at 06:51 #24774
Nick_G
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@nick_g
2 October 2016 at 07:35 #258796
JasonB
Moderator
@jasonb
Walnut shells will polish the partys but if there are any machining marks then something a bit more abrasive first may speed things up try a fine sand.

You can probably get the gem stone polishiong mediums cheap off e-bay

Edited By JasonB on 02/10/2016 07:36:19
2 October 2016 at 07:38 #258798
Michael Gilligan
Participant
@michaelgilligan61133
Nick,

Walnut shells and/or crushed Apricot stones are often recommended.

My tumbler project has been on-hold for a while now, but it's worth a look at the old thread: **LINK**

http://www.model-engineer.co.uk/forums/postings.asp?th=110439

MichaelG.
2 October 2016 at 10:28 #258818
Nick_G
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@nick_g
.

Cheers guys.

Nick
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