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Guerrilla guide to CNC machining, mold making, and resin casting

lcamtuf.coredump.cx

21–30 of 40 posts

Re: Guerrilla guide to CNC machining, mold making, and resin casting

#21
post #5

Great article, I am glad MSDS was touched on before machining cast parts. The only thing I would add is that users should check MSDS before machining ANY material. There are a few exotic metal alloys whose dust can cause severe respiratory trauma.

As the son of an engineer who built milling machines and died from lung disease caused by inhaling beryllium dust, I agree.

Re: Guerrilla guide to CNC machining, mold making, and resin casting

#22
post #17

CNC machining is exactly the hobby I've wanted to develop. A well-timed post indeed. My eternal gratitude for your efforts to provide this information.

I just started doing CNC machining. So far I've just been making silly things, but feel free to message me if you've got questions. For the simple one-off stuff I've been doing mold-making is too much of a hassle, but the above guide certainly encourages me to try.

Re: Guerrilla guide to CNC machining, mold making, and resin casting

#23

Is there a co-operative movement in the maker movement - one where the mysterious "Well equipped machine shop" is a co-op or subscription approach - it strikes me as very similar to airplane ownership - very few pilots own a whole aeroplane, and why should every maker own all they need As an aside I have often felt this would be a fantastic Mythbusters franchise

In Sydney Australia, check out Robots & Dinosaurs - http://www.robodino.org - a couple of cnc mills, a choice of several 3d printers, a laser cutter, and a whole bunch of other useful gear, and people happy to show you how to use them.

(And in Canberra Australia, look for http://www.makehackvoid.com/ )

Re: Guerrilla guide to CNC machining, mold making, and resin casting

#24

Is there a co-operative movement in the maker movement - one where the mysterious "Well equipped machine shop" is a co-op or subscription approach - it strikes me as very similar to airplane ownership - very few pilots own a whole aeroplane, and why should every maker own all they need As an aside I have often felt this would be a fantastic Mythbusters franchise

Maybe look into Fab Labs. They're not so much a franchise as they are a community outreach / educational thing. The program was started by MIT. The complete hardware specification totals to around $50,000, which isn't too bad. http://fab.cba.mit.edu/about/faq/

Curses, I wish I knew about this when writing up the inventory to our budget. Here's their inventory: https://docs.google.com/spreadsheet/pub?key=0AtIlZyLn99e6dGR...

Leave it up to MIT to push Maker culture. If you're a student there, check out their Hobby Shop: http://studentlife.mit.edu/hobbyshop

Re: Guerrilla guide to CNC machining, mold making, and resin casting

#25
post #17

CNC machining is exactly the hobby I've wanted to develop. A well-timed post indeed. My eternal gratitude for your efforts to provide this information.

Patience is important. I bought a Sherline mill and converted it to a 4 axis CNC setup. The challenge with these small mills is rigidity vs material. So if you're making something in Aluminum for example you still need to make a lot of really fine cuts rather than just plowing in and throwing chips like you can on a 'real' mill. That said if you are willing to wait for it (and with a CNC setup its really a time tradeoff) you can get good results.

Re: Guerrilla guide to CNC machining, mold making, and resin casting

#26

Is there a co-operative movement in the maker movement - one where the mysterious "Well equipped machine shop" is a co-op or subscription approach - it strikes me as very similar to airplane ownership - very few pilots own a whole aeroplane, and why should every maker own all they need As an aside I have often felt this would be a fantastic Mythbusters franchise

I'm working on a startup now to help people find these types of resources (often hackerspaces, but elsewhere too), so that people interested in DIY can make more things easily.

Re: Guerrilla guide to CNC machining, mold making, and resin casting

#27
post #9

Is there a co-operative movement in the maker movement - one where the mysterious "Well equipped machine shop" is a co-op or subscription approach - it strikes me as very similar to airplane ownership - very few pilots own a whole aeroplane, and why should every maker own all they need As an aside I have often felt this would be a fantastic Mythbusters franchise

There's at least one US company I know of called TechShop[1] who have 5 or 6 places around the US with pretty well equipped workshops, along with instruction/safety classes etc. On the more DIY front, Hackerspaces[2] are a sort of community/timeshare approach to various equipment, and are much more widely spread,[3] but since they're largely community-driven, the range of stuff available varies widely. [1] http://www…

I was a member of TechShop in the Bay area for a while. Unfortunately all their locations are just too far from my home and they have no plans to open a shop in the East Bay, but if you are a member of one, you are a member of all the locations. Two thumbs up.

Re: Guerrilla guide to CNC machining, mold making, and resin casting

#30

Is there a co-operative movement in the maker movement - one where the mysterious "Well equipped machine shop" is a co-op or subscription approach - it strikes me as very similar to airplane ownership - very few pilots own a whole aeroplane, and why should every maker own all they need As an aside I have often felt this would be a fantastic Mythbusters franchise

Metrix Create Space isn't a co-op, but they do sell memberships. It is open to the public from noon to midnight seven days a week in Seattle. http://metrixcreatespace.com
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