Comments sought on new build: A CNC Router for RC Gliders and Planes

[Davek0974]

My calc is giving me 24,000rpm, 4000mm/min feed with hard plywood and 6mm 2 flute carbide tool, max depth slotting of 4.5mm

[Wobblycogs]

Obviously I don't know what you'd use on a CNC (yet) but if you were routing by hand with a 6mm bit you'd use the fastest router speed (24,000 rpm usually) and take 4mm deep cuts max. Feed can be anything fastest enough to prevent the bit from burning the timber. By hand and with a jig I'd guess I'd be doing about 2.5m/min but it's mostly done by ear. If you can use a 1/2" straight bit you can go much much faster they are nearly indestructible in wood.

[njhussey]

Cheers guys, ill reduce the depth and up the speed, Graham I managed to snap a 1/2" bit 😁

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[njhussey]

Ok so old teeny 200 lph water pump with head of 0.45m wasn't man enough anymore so splashed out a whole £15 inc next day delivery for a 1400lpm pump with 2m head.



Just made a acetal adaptor 18mm down to 8mm...





Then a couple of acetal joiners as the pipe was now too short for the new tank...



New 4 gallon cold water storage tank with lid and Bob's your Uncle....new bigger cooling system 😁



Comparison of old pump and new pump....



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[njhussey]

Put a cyclone in before the CamVac (just because I had it rather than need it) and its brilliant!! Takes out about 95% (guess) of all crap, fine dust as well....



Cutting plastic so you get a good belt from the static when you go to empty it 😁

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[njhussey]

Chips in the cyclone currently being generated from these I'm cutting out of 18mm sheet Acetal at work...



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[njhussey]

Bits in the cyclone...



Bits in the CamVac, was a new bag...the stringy bits you can see were already there 😁



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[MikeyC38]

Hi neil

Thanks for the post on my log - I placed the order for the bits soon after posting the video!. Also great idea to use a cold water tank for the spindle cooling system. I found when I was running in my spindle for about 3 hours that the water in my 10 litre bucket was tepid at the end of the period.

regards

Mike

[njhussey]

Hi neil

Thanks for the post on my log - I placed the order for the bits soon after posting the video!. Also great idea to use a cold water tank for the spindle cooling system. I found when I was running in my spindle for about 3 hours that the water in my 10 litre bucket was tepid at the end of the period.

regards

Mike

Hi Mike,

No problems, glad it was useful! I've been really impressed with how efficient it is. If you cut plastic don't forget to earth the bin!

I was finding my 5 litre water tub got pretty warm after a couple of hours cutting and had one of the 4 gallon cold water tanks left over from putting in a chemical blacking line at work so decided to use that and upgrade the pump whilst I was at it.

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[JoeHarris]

Put a cyclone in before the CamVac (just because I had it rather than need it) and its brilliant!! Takes out about 95% (guess) of all crap, fine dust as well....



Cutting plastic so you get a good belt from the static when you go to empty it

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How do you find the noise on the Camvac?