Thread: desktop CNC to cut alloy
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25-07-2013 #1
im looking for a cheap desktop hobby cnc machine to cut alloy around 1/2 inch thick, and 25cm wide.
im totally new to this, any ideas on what i should look out for in a cnc machine?
any recommendations ?
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25-07-2013 #2
Oh dear, lets start with the basics...
1. what alloy?
2. do you mean a workpiece of 25cm x 25cm (you only said 'wide').
3. what do you want to do, engrave the surface or cut full depth pockets/holes?
4. where is the machine going to be used, in a workshop or a spare room
5. how quickly? Is a 24hour run going to be an issue?
6. whats your budget?
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25-07-2013 #3
If your dead set on not knocking up your own then have a look through this thread in the link,im not recommending the machine but its as cheap as you,ll get off the shelf ,there all over ebay and youtube,so see and read about its capabilities if thats not for you then i cant think of any other cheap off the shelf options,
http://www.mycncuk.com/forums/mills-...uter-mill.htmlLast edited by dazza; 26-07-2013 at 10:16 AM.
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26-07-2013 #4
thanks for the replies, another question, where do you guys buy your alu blocks from?
also how long do u guys think a Chinese 3040 cnc would take to cut an object like this :
http://www.ebay.co.uk/itm/HOBAO-HYPE...item33840ce6f5Last edited by 8900120d; 26-07-2013 at 01:08 AM.
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26-07-2013 #5
aluminium warehouse and asc metals seems to be favourite for alu plate bar etc
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26-07-2013 #6
I'd personally avoid Aluminium Warehouse.
I ordered two sizes of bar in my last order, and they substituted both sizes. The one size they asked about substituting, I explicitly told them was unacceptable, but next thing I knew was I'd apparently "accepted the offer", and the order was dispatched. When it turned up, both sizes were wrong and despite emailing and phoning, they've yet to do anything about fixing it.
So I'm currently sat with over 30metres of bar that is no use to me.
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25-07-2013 #7
If by alloy you mean alu, then it depends on your definition of cheap!
My machine will cut alu as long as my tool allows it, but I am only going a mm down with a feed rate around 1000mm per min.
So basic operations can take a while.
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