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Small CNC mill needs better cooling #181

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amcewen opened this issue Jul 30, 2015 · 6 comments

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@amcewen
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commented Jul 30, 2015

The stepper driver chips on the small mill get very hot in operation.

Partly this is because the two small fans in the case aren't wired up properly and don't run.

However, it'd also help if the driver chips had heatsinks on them. Would be worth getting three of http://www.hobbytronics.co.uk/dip8-heatsink or similar

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commented Sep 8, 2015

I've ordered two new fans to replace the broken ones fitted at the moment. Given that the main supply is 24V, presumably we'll run them in series.

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commented Sep 10, 2015

The fans have arrived.

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commented Sep 10, 2015

The fans are fitted. We could still do with the heatsinks though.

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commented Sep 16, 2015

I've ordered the heatsinks.

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commented Sep 17, 2015

The heatsinks have arrived, and are in the box of CNC parts awaiting me having time to fit them.

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commented Sep 24, 2015

Heatsinks fitted! (And they get pretty warm in use, so I think they're working :-)

@amcewen amcewen closed this Sep 24, 2015

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