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Hi all,

last weekend I printed three Marvins: 1x Bronzefill, 1x Brassfill and 1x Copperfill. After printing they were pre-polished for approx. 8 hours in my self designed rocktumbler and finished with a buff wheel. Not perfect yet, but the result is ok for a first try :wink:
The lesson I have learned is that I have to print finer layers to make polishing easier - will try it soon.

Here are the results:

— before:

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— after:

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9 Likes
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Really cool!

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This is awesome! Don’t forget to put those up on your Hub profile! They are great!

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done :slight_smile:

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Wow those are awesome

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They look amazing !

What kind of rocks/grinding powder did you use ?

I have been experimenting a bit with a rock tumbler and ceramic grinding pyramids to polish PLA but no luck.

Cheers Kev.

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I used brass screws, works fine.
Unfortunately your message regarding the ceramic pyramids came a little bit too late: Yesterday I ordered exactly this kind of grinding “tools” to experiment with it :wink:

Cheers,

Joerg

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These aren’t full metal Marvins if they are printed with ’ -fill’ materials. They are mega-cool though!

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How long did you leave them in the tumbler? Any other details? They look awesome!

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Are metal “fill” materials abrasive? Has printing with this worn down your nozzle at all?

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I didn’t recognize any effect to the nozzle yet. May be it’s because I didn’t print much more than theese three

little guys until now :wink:

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:stuck_out_tongue: :wink:

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approx. 12 hours in the tumbler and then approx. 20 minutes of polishing with the buff wheel for each Marvin

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I’m just assuming it was a typo when the word ‘full’ was used. Perhaps it was meant to be an ‘i’ and not a ‘u’. Will be posting a truly fUll metal Marvin in stainless steel soon ; )

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I have been experimenting with these filaments, but not without some problems. Could you please give your print settings, like temp and nozzle size.

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As a chemical bio physics engineer I am now trying polishing with chemicals. NaOH gives promising Results. Only have to find the right concentration.

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Nice!! Looking forward to see it!

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btw: the rock tumbler is available on instructables: http://www.instructables.com/id/Affordable-Rock-Tumbler/

1 Like
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Wow those are awesome. I was proud of mine here but these have such nice gloss. Did you use a buffing agent?

Really captures the true colors of the metals.

Great work!

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Hi, thanks. What do you mean with buffing agent?