New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Buy a rock tumbler for post-processing CNC machined items, and more. #1023

Open
MatthewCroughan opened this Issue Jan 6, 2019 · 3 comments

Comments

Projects
None yet
4 participants
@MatthewCroughan
Copy link
Contributor

MatthewCroughan commented Jan 6, 2019

We need one of these tumbler appliances to process raw items that come off the cnc, here's a look at what Julian has done with his swan-neck parts.

The part on the right is unprocessed, straight from the CNC machine. And on the left is the gorgeous tumbled part which is just beautiful, this can be applied to almost anything hard that is cut on the CNC machine. They're often used to make nice, shiny, smooth stones.

img_20190105_182710

I've no idea what would constitute a superior tumbler. But these seem to be a good place to start, since it's not rocket science.
You simply rotate a cylinder in a filled tube of blunt stones that continually smash into the items you place in the appliance, smoothing its corners. Like a slow cooker for metal parts!

Here's a before and after of random stones, perhaps found on the beach;
image

It would seem that this comes with a US plug according to some reviews, which shouldn't be a problem. One pre-requisite is that it has a rubber interior, to prevent it from being incredibly noisy, bashing against plastic etc.

https://www.amazon.co.uk/NATIONAL-GEOGRAPHIC-Hobby-Rock-Tumbler-x/dp/B01LQCIL88/ref=sr_1_3?ie=UTF8&qid=1546746600&sr=8-3&keywords=rock+tumbler

To avoid getting ripped off, we should take a look at alternatives and make an educated decision, such as:

https://www.ukge.com/en-gb/Stone-Tumblers/2lb-Beach-Stone-Tumbler__p-252-1188.aspx

@johnmckerrell

This comment has been minimized.

Copy link
Member

johnmckerrell commented Jan 6, 2019

@Sean-anotherone

This comment has been minimized.

Copy link

Sean-anotherone commented Jan 6, 2019

Or build one - I've seen a jewellery-sized one made from an old go-kart tyre.

@goatchurchprime

This comment has been minimized.

Copy link
Contributor

goatchurchprime commented Jan 18, 2019

Let's start with that cheap one, to get it right and get it in use. Any votes for this yet?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment