| Electronics > Projects, Designs, and Technical Stuff |
| Square holes on aluminum.... how do you do it? |
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| beanflying:
I have seen an arm put into a Lathe once it definitely didn't end well. Back when I had a real job I was pulled up by the companies MD over why I wasn't wearing a tie when I came back into the office on several occasions after visiting clients. The business involved Pumps, Motors and Gearboxes clearly his MBA following the fancy private school didn't give him all of the answers after all. :palm: |
| tkamiya:
do lathes have arms?,ive never seen one with arms or legs come to think of it!! [/quote] Do I need to be graphic? Lathe doesn't have arms but the operator does/did. |
| dom0:
Weeeeeeeeeeeeee |
| coppercone2:
you can use a dremel to route thin aluminum of 1.5mm but you need to make a fixture so it does not vibrate (i.e. stiffen it with some steel behind it) and very carefully feed it to a carbide burr, it tends to 'bounce' around in the hole. if its something like a angle beam, then you can just put it in a vise and its stiff enough. but if its a sheet Like put it in a vise and clamp 2 steel bars behind the aluminum close to where you are cutting so it does not vibrate too much but I don't see you making nice squares, it will still require some filing (I recommend a special aluminum file) |
| EEEnthusiast:
Finally I was able to get my CNC milling machine/router to work. I had assembled it almost a year ago but left it in the corner as I got busy with other things. Yesterday I cut out a rectangle hole 10x5mm on a 2mm thick aluminium panel. The first attempt was a fail as I was learning to set the speed, drill depth, correct bit size etc. The 2nd one came out decent. Attaching a pic. The CNC I have used is the one below https://www.aliexpress.com/item/32836161266.html?spm=a2g0s.9042311.0.0.5a964c4dWT7bXv I used LibreCad to make the hole dxf Then use DXF2GCODE Tool to convert that to GCodes. Then GRBL Controller software running on Windows is used to send the GCodes to the CNC machine. I used a 1mm milling bit bought from aliexpress for the tooling. Few care-abouts ========== Just ensure that the spindle is rotating fast enough (6000 rpm+) when cutting on metal with small milling bits. The XY movement rate was set to 120 mm/min (about 2mm per second). The Z movment is set to 0.05mm per iteration. So it takes about 40 iterations to complete this cut. Note : I have no affiliation with AliExpress or any CNC makers. |
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