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Parting off 130mm Aluminium bar

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Hopper07/04/2017 11:09:39
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It's aluminium. 15 minutes with the old-fashioned manual hacksaw fitted with a coarse blade (18tpi) will do the job.

Rather than slicing through in one cut, as you might on a loaf of bread etc, rotate the job in the vice at intervals so you are sawing on shorter sections of the material rather than the full 130mm towards the middle and work your way through in manageable increments.

Given the shortness of the piece, it might be best to hold it in the lathe with the spindle locked in position while hacksawing, rotating spindle at intervals as above. Secure a piece of board across the bed so any slip with the hacksaw blade does not scar the ways.

Edited By Hopper on 07/04/2017 11:12:28

Edited By Hopper on 07/04/2017 11:14:48

Ian S C07/04/2017 11:13:41
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To cut off 130 mm dia x 40 mm long get two bits of steel about 75 mm x 8/10 mm thick x at least 100 mm long(my bits are 200 mm long), open the vice jaws to take the bit of aluminium+ thr two bits of steel, one each side, at the end away from the blade put a 130 mm spacer, poke the bits of steel right next to the blade, and clamp up tight. It works for me. For very thin(length wise) you may need a bridge of thin metal across the gap under the work piece to make it easier to set up, otherwise you need at least three hands.

Ian S C

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