Giant 20' x 3' x 2' router build

**gavztheouch** · 09-10-2014

You prob want a cabinet similersomething like this.

http://www.rittal.com/uk-en/product/...ductID=PRO0023

Most proffesional cnc machines will have a fan to cool with a filter to stop the majourity of crap getting inside. I guess you might have some long running times so you might want to add some sort of fan on your stepper drivers or at least bolt them to a heatsink or something. If you really want to push the boat out you could bolt them to a hunk of aluminium and water cool the block. My thermwood machine has a airconditioning unit attached to cool the insides of the cabinet.

**charlieuk** · 09-10-2014

any suggestions to what sort of filters to use, i guess it will need to be fairly large to prevent the chances of it geting blocked up to quickly? how about the vfd? originally i had it mounted to the gantry but then realised it was probably better some were else. Is it something i need access to the hole time so needs to be some were accessible and if so then how would i protect that from dust all so? put it in a separate box?

cheers

**JAZZCNC** · 09-10-2014

Big Steel box with 2 fans pulling air in thru good paper filters and one pulling it out. Filters like this. http://www.apc.com/products/family/?id=414

Car air filters also make good filters but you'll need to make an housing similair to whats in the picture. Which is easy made from thin ali sheet if you have a working machine and a good little test.

**charlieuk** · 09-10-2014

cheers thanks i will see what i can find at a local car spares shop, should i put the vfd in with it all or separate do you think?

**JAZZCNC** · 09-10-2014

Originally Posted by charlieuk

cheers thanks i will see what i can find at a local car spares shop, should i put the vfd in with it all or separate do you think?

Put it inside with it. If you need or want to see the display then depending on VFD make you can often remove the front display and put externally.

If your controling thru software then you don't really need access but it's nice to be able to see the display and have it set for Amps. This will give an indication to cutter wear and spindle load. (thou don't think your foam will challenge the spindle any.!!)

**charlieuk** · 09-10-2014

cool many thanks will work on that principle.

**EddyCurrent** · 09-10-2014

like this;
http://www.mycncuk.com/threads/6565-...6651#post56651

make sure the fans blow into the panel (via the filter), not suck out of it, this is to keep the air pressure inside the panel higher than outside.

**charlieuk** · 10-10-2014

Box purchased and went super size just incase I needed more room.

**Clive S** · 10-10-2014

Originally Posted by charlieuk

Box purchased and went super size just incase I needed more room.

Can you not vent it from the outside with say 4" soil pipe. ..Clive

**charlieuk** · 11-10-2014

Originally Posted by Clive S

Can you not vent it from the outside with say 4" soil pipe. ..Clive

I can do but would prefur not I would be a little conserned about moisture ect. I have got a car air filter that I will try and sort something for and the box has plenty of free air so I'm hoping it will stay fairly cool anyway. I guess adding a secondary thermometer would be a good idea.