First tech challenge

Mostly Printed CNC - MPCNC Advice
21

Wow - glad to see your team making such great project!

If you end up using trochoidal cutting, you’ll want something a bit more stable than a ping-pong table, but that could really just be reinforced with sawhorses. For fun, I cut the struts for mine out of ≈6mm aluminum (not sure the precise allow since I bought it off a scrap pile.). Even my machine wobbled a bit more than I was comfortable with when it got to swinging the spindle around.

However, you could easily cut this on the ground on a sheetgood.

Good luck with your gracious competition!

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Thank you. This is the progress I have so far. I might add legs later but we have space in the garage to keep it on the ground so it should be fine.

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23

I just used a fourth of an old table tennis table, luckily the size was perfect.

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25

The LR4 can easily cut 6mm (1/4"“) or even 9mm ( 3/8”) aluminum, especially if using trochoidal milling and air/mist cooling.

The MPCNC might be a stretch to cut material that thick

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27

Can you show us your machine, please? I’m really interested in it.

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Yeah i’ll send it once i get back from school. Got everything wired up and all the motors and sensors are working correctly. I’m gonna try a test run but before i do that, how do I square the machine to find error? Is there a button on the fluidnc program to automatically do that?

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Also if anyone is from an FRC team, we would appreciate if you could mentor us regarding design and build this season because the shooting game is very similar to past FRC games. Thanks!

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Can confirm, even a novice like me can cut aluminium on the LR

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