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Burr and matting media for vibratory tumbler to nicefy steel

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Joules:
Hi Pekka, it knocked the edges off rather than debur, but my shear doesn't really leave a burr on these.  It cleaned the scale off from heat treating.

For anyone after a 3D printed solution I came across this.

https://www.thingiverse.com/thing:3666116

appletree:
I had a similar tumbler, the lid was solid so dust didn’t come out, as the media was heavy I ncreased the mass off the eccentric weight and yes it did work better. Unfortunately the bearing housings wore out. Be warned!

tonyfoale:
I recently had to make a trip to the US. Usually on my way back to an airport I stop off at a Horror Fright store and top up my luggage allowance.  However, past trips had pretty much exhausted my needs of stuff small enough for luggage and so I bought one of these
https://www.harborfreight.com/5-lb-metal-vibrator-tumbler-67617.html

and https://www.harborfreight.com/540-lb-Medium-Ceramic-Abrasive-Polishing-Tumbler-Media-63673.html

and https://www.harborfreight.com/520-lb-Rust-Cutting-Resin-Abrasive-Tumbler-Media-63672.html

I also tried some sharp sand and some glass beads.

I feel that I had wasted my money.  It is useless.  Against the wisdom of the instructions I tried the bought media with water.  That worked a little better but still very poorly.
I will try it with some of the media suggestions from this topic.

PS.  A while back I built a very Q&D rotating tumbler using a 75 rpm motor and gearbox from an old photocopier and that works so much better.

PekkaNF:
Great update.

I have been using tumbler and commercial media, laced with polishing liquid. I am happy with results. I typically use it for light deburring and it takes from 1/2 hour to 2 hours of buzz in garage.

Pekka

tonyfoale:
Pekka,

Can you give some more detail on the media and polishing compound?
Watching your video shows that the media motion is totally different to mine.  It is much more active and the media path is very different.  Tomorrow I will video the motion of mine and post here.  Comparing yours and mine it is very obvious why mine is such a disappointment.

Your video also indicates that the suspension system on yours has a lower resonant frequency than mine.  i.e. it is supported on softer springs but this could be related to the rpm of your motor, do you know what that is, the specification plate does not include that.  I will check mine with a strobe.

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