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maddox



Joined: 21 Dec 2006
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Thin walled U238 tubes are mostly used as radiation shielding.

But I guess, with the right "crush" factor, a creative mind can get a nice mushroom cloud.

Unfortunatly, the first part would be storing those tubes a while in a graphite pile, catching neutrons.

Post Tue Aug 18, 2015 2:42 pm 
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Knightrous
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Saw this pop up on HaD and thought a few people on here might enjoy it.

http://hackaday.com/2015/08/19/steam-powered-machine-shop/#more-166044
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Post Thu Aug 20, 2015 1:11 pm 
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Glen
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Question to Nick mainly but if anyone knows what I'm on about feel free to answer Razz But do you know where the ebay knock off tormach TTS tool holders can be had now?

I recall they could be had for $150 for 10 but the chinese name for them I've long since forgotten Sad
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Post Fri Dec 18, 2015 9:01 pm 
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Nick
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Sorry, no can help on that one. All the Tormach stuff is Chinese in the first place, so maybe the same factory is grey-marketing the holders? $15 each is an amazing price; I'd definitely get a box for that price.
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Post Fri Dec 18, 2015 9:45 pm 
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Glen
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Got the CNC ready so time to load up on tooling.

Anyone uses the high helix aluminium 3 flute end mills? How do they compare with your standard 2 flute?
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Post Mon Mar 14, 2016 4:53 pm 
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Nick
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They scrape your wallet out much faster Laughing I tried one out a few years ago and it left a good finish until it broke - my fault.
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Post Mon Mar 14, 2016 4:59 pm 
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Glen
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Hahaha this machine has been a fine wallet scraping device so far. Not worth the premium over normal 2 flutes then?
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Post Mon Mar 14, 2016 5:11 pm 
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Nick
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From memory, it left a smoother finish and might make sense for CNC. I suspect they are best for commercial shops pushing their feed rates to the max to make the most money.

Keen to see how your conversion performs!
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Post Mon Mar 14, 2016 5:20 pm 
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Glen
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Fair enough then. Should have some videos of it cutting this weekend, just waiting on the last of the parts to show up and work out how to cnc the spindle control then its robot bui.. relaxing time Rolling Eyes
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Post Mon Mar 14, 2016 5:24 pm 
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Nick
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U mean turbo bike building, right? Wink
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Post Mon Mar 14, 2016 5:25 pm 
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Valen
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The cheap chinese carbides seem to not suck, particularly for the smaller sizes, Russell got a box of like 50 for $100 in 1-3mm sizes from one of the ali's
We have a few SEI carbide ones as well, they do a better job in terms of finish and the like but too scary to use them at first lol.
We use the sei carbide standard with good coating generally for the 6mm stuff, they break, you cry, you continue.
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Post Tue Mar 15, 2016 10:56 am 
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