Thanks David! I will definitely be having a look at those.

 

I've been playing around a bit with the noise issue.
Molten lead filling ? I didn't try that (YET).
I agree that a lot of it is probably coming from the "ringing" of the extrusions.
I expect to stick a lot of neoprene on the backs of the extrusions this week.
If that helps I will probably do the sides of the Z beam.
X and Y have exterior rollers, so I can't do those.

Neoprene as in "wet suit material".

If that doesn't help this will quickly become a garage machine, not a hobby room toy.
3D printer is the quiet standard around here )-;

 

I put some thin pieces of dense neoprene sheet cut to size under the extrusion corners. Then I screwed the whole machine to the plywood top of the stand I built. That way it compresses, not fully but about 3/4 compressed, which the rubber needs to provide maximum vibration absorption.

I'm not sure I would say it's dead quiet, but it definitely operates with less volume this way.

 

tweak the feed rates on the xpro - it makes a vast difference to the sound level - you can almost get it to sing #cncmusic

 

I know m8, my next door neighbour already thinks i'm right out of one flew over the cuckoo's nest, one day i'm trying to fly a home built helicopter in my garden next a hiller style flying platform, now he's hearing weird noises coming from my living room

My small garden shed is full to capacity but if I can't dampen the noises down i'll have to squeeze it in somehow.

 

Thanks for the tip

 

I'm quite lucky the misses helps me a lot, she's the brains in this family.

 

Just a suggestions she made this morning .....why not put expanding foam in the holes of the aluminium, messy business but it would probably dampen that chinning noise a bit.

 

I run out of space a long time ago, having to have a reshuffle to get the cnc gear in

well the C-Beam has grown - still a lot more to do but......

 

That looks fantastic m8! Keep a note of all the changes with parts list etc encase someone else wants to upscale like yourself, I might at a later date but not for a while.

 

Well i hope that this next weekend when i get back home i can finally get my plate maker working again. It was working and then it had a close encounter with an opening garage door and ended up in a twisted mess on the floor.

I can confirm that the little nubs on the cast corners if put under a sudden large load (Weight of router falling on it) then they just dig in and make dents and come loose.

So after filing all of the nubs offs and having to replace all of the 10mm screws it is nearly ready to go again. (Also i put a couple of more corners in just for good luck )

 

I have no solid theory to support this, but I think most of the "ringing" is coming from the edges of the extrusions, not the enclosed pipes/chimneys.
I'm probably basing this on some old-time air cooled engines.
Almost any spongy rubber inserted into the slots that aren't used for wheels would probably help.
I thought of elastic shock cord, ("bungie" cord) but there is a LOT of linear meters to muffle on just the X Y and Z beams.

Ahhh, the details, the WRETCHED DETAILS.....

 

ouch!

 

you could be right about that, i think these cnc machines are all noisy to an extent, most you tube videos add music so there is no noise from the motors etc. this is my first cnc machine so its hard to judge with nothing to compare it with. all that said, when the router/spindle is running and hoover, i don't think it will be all that noticeable but the less vibrations the better.

 

send some of that neoprene over my way and i'll roll it up and stick in my ear holes, problem solved!

 

Decided to join the fun, just ordered a kit from http://ooznest.co.uk plan to use a smootieboard and a 400 w brushless spindle.

 

Good stuff! I look forwards to seeing it come together

 

The steppers are noisy. I was planning on swapping my x and y before the accident. After it was a must do as lugs were broken on the steppers so i could no longer mount them.

The cleathpath servo's are silent for moving things around. Then when you turn the router on it dosnt matter as that makes so much noise anyway.

 

Is this them?... http://www.teknic.com/products/clearpath-brushless-dc-servo-motors/

 

Astrosyn dampers seem to be the standard isolators on 3D printers for the NEMA 17 motors, but they are typically mounted ON plates (of melamine or aluminum), not on long spacers.
Two diagonally opposite screws attach the motor to the isolator, the other two diagonally opposite screws attach the isolator to the plate.
The shaft pokes through, to the pulley & belt.

I'm already a bit uncomfortable with the NEMA 23s being mounted on only 2 (adjacent) corners.
I will be cutting some new end plates as soon as I have 1/2 inch aluminum cuts going nicely enough - - "as soon as"; ...Yeah, right.
THEN I might try some astrosyns.

 

Thanks m8, I'm not keen on changing settings but if it comes to it i will, i'll mess about and see what i can do, i wanted to lift the machine in the air while its going to hear the difference

 

@shugster yes those are the servo's. Required a different power supply and some extra control wiring but they reduce the noise by about 100%.

Once i get my stuff together i will try to see if i can do a video to show the difference. But again it is all pointless as when you turn on the spindle / router that makes so much more noise or at least mine dose

 

I look forwards to the video, I'm really thinking about vibration, if there is any through the tool then it might become a bigger problem than any noise issues.

 

Hi Mark,
I am a complete newbie to CNC but would like to know if there is or will be or could be a C-Beam machine bundle with an 18 inch square working area?
Roger

 

its openbuilds so you can build anything you can think of its a bit of a learning curve but there are plenty of vids and info about

 

One way to make the machine taller, given it already has about 6" of Z, is to mount the 'table' lower, thus increasing working depth from 1.25" to whatever you can squeeze out with minimal changes. Of course, this is talking theory. I will soon be able to see for myself ... stay tuned. Should be able to get an extra 1/2" or so of working depth just reworking how table mounts ?