Newbie looking at 6040 (China CNC) for polypropylene 15mm sheet

[Zeeflyboy]

Price isn't necessarily an indication of better quality, if the reviews are decent and the parts look good then have a go - I just linked to the store that I have personally ordered from in the past.

For Alu, yes upcut is definitely what you want as chip evacuation is vital. Ideally one would also be using compressed air (with added bonus points for mist coolant) with a nozzle aimed to blast any chips out of the way.

I initially bought Downcut for some closed cell foam I was machining for custom cases/tool trays. They are mostly of use in softer materials where the top edge can be a bit rough with an upcut bit. Compressed air or a vac shoe can help with chip evacuation there.

[JOGARA]

I bought one of those cheap misters off eBay for like £7. Not installed it yet as I need to tap a hole for it.
Not looked into what coolant to get for it yet though.

I see what you mean about the down cut now. Like on that wood I tested on, would have been better having a down cut as it does not pull the fibres up.


https://www.shop-apt.co.uk/economy-3...-diameter.html
Probably best bet in terms of roughing end mills to get delivered this week?