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by RogerS » 19 Dec 2018, 12:08
I have a cunning plan and need to cut some channel with walls 5mm thick. Can I use an old mitre saw ? What sort of blade ? Any old?
TIA
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RogerS
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by Woodster » 19 Dec 2018, 13:04
A mitre saw will do it if the blade is sharp enough. It may not cut wood as well afterwards though!
Last edited by
Woodster on 19 Dec 2018, 15:19, edited 1 time in total.
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by Mike G » 19 Dec 2018, 13:07
Yep, that's easy for a normal chop saw. It makes quite a clatter as it cuts, and the shards of aluminium are quite hot for a millisecond, but it cuts cleanly and accurately.
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by Robert » 19 Dec 2018, 13:08
We always used triple chip blades for aluminium but that was cutting extrusions all day long. For home use I'd say any TCT blade with a high-ish tooth count would be ok.
Aluminium is sticky stuff when cut so keep the blade lubricated between cuts. For 1 or 2 cuts WD40 sprayed on the blade sides will do. We used paraffin with 10% any car type oil added. Spray bottle or paintbrush.
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by RogerS » 19 Dec 2018, 14:37
Thanks guys
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RogerS
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by Rod » 19 Dec 2018, 15:42
I’ve got a Rage Evolution for such purposes and for rough cutting.
Rod
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by RogerS » 19 Dec 2018, 15:57
Thanks for reminding me of that one, Rod.
I used to have one along time ago but sold it. Just bought a 'B; grade one for just over £50. Will come in very handy here.
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by Woolf » 19 Dec 2018, 23:00
The best and safest blade to use has a negative hook angle. A wood blade with a positive hook angle tends to grab making it more difficult to control the cut
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