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| Aluminium CNC build (TEP mill converted) by Craynerd |
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| John Stevenson:
To me that part of the program is worth more than the program itself. I get loads of drawings in via DXF for laser cutting and I bring them into Cut2D, join all the vectors and export as a decent DXF, then send to the laser cutters or process in another program to go on the CNC. It's fantastic how well things cut when you get a clean drawing. |
| raynerd:
Well thanks for the advice last night - I swiped a piece of scrap hardwood from the wood yard before it closed at lunch and had a go at cutting - worked first time! Sorry a little out of focus! |
| philf:
--- Quote from: craynerd on April 07, 2012, 04:47:22 PM ---Well thanks for the advice last night - I swiped a piece of scrap hardwood from the wood yard before it closed at lunch and had a go at cutting - worked first time! Sorry a little out of focus! --- End quote --- Very nice Chris. :clap: How long did it take? Phil. |
| raynerd:
It took a good 20-25 minutes plunging at 2mm depths each pass, so with 7.5mm material, it took 4 passes to cut through. I was holding back on the feed speeds as my motor has stalled on me a few times, but this was before I modified the axis and was having flex on the spindle. I expect I could nearly knock 25% of that time off if I pushed the feed up. Just a question regarding feeds and depth of cuts - I know it is very dependent on the machine, but what sort of depths of cuts would you be attempting if i wanted to attempt cutting brass on this? Do you think I could even give steel a bash or is it not worth even attempting? It is small, but pretty damn sturdy now I`ve supported that extra rail with the linear bearing. - so I`ve been using 2mm plunges in wood with a feed of 12mm/sec. In terms of my machine, from what you can see in the vids and pics...what would you turn this down to for steel and brass with the same 1.95mm end mill. I feel that the depth of cut is in some ways more important than the feed speed - especially with my motor stalling if pushed too far. |
| Swarfing:
Chris as an estimate ignoring feed and speeds you should be able to get half the diameter of the cutter in depth of cut. But a lot depends on the spindle speed, coolant and more etc. |
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