Im new, am a 3D designer. Need a New cnc machine and need advice and guidance

[FlyHighRC]

Oh building a machine to now combat resonance..meaning pulleys..those pulleys will need a special mount t fix onto the ballscrew right? This is now sounding more and more expensive... Please try to remember my budget :D

[JAZZCNC]

Oh building a machine to now combat resonance..meaning pulleys..those pulleys will need a special mount t fix onto the ballscrew right? This is now sounding more and more expensive... Please try to remember my budget :D

Nothing special needed for using pulleys and the only extra expense are the pulleys & belts roughly £15 per axis. Which isn't much more than direct mounting by time you have bought correct couplings.

[FlyHighRC]

ahh yeah, just looked at this site, not too bad at all 31T10/25-2 | Ondrives

Im revamping my old design, the frame im happy with...i cant see there being much wrong with it after i strengthen it which was the main critique with it. So I have stiffened that up now. Also the gantry is sitffened up which I will show later, mian change is 2 pieces of 6mm plate welded onto the box section and did away with angle Iron(Which I call L Bar) where the Lbar was is now replaced with 6mm steel welded onto the boxsection

Green is 6mm plate, Note, I will need to extend the bottom 6mmplate awayslightly to make room for the bolts close to the vetical 6mm piece

[Clive S]

As a matter of interest have you thought about how you will fix the ball nut and bracket to drive the Y axis it seems you are running the screw through the uprights in the gantry. Also there are cheaper places to buy belts and pulleys. ..Clive

[FlyHighRC]

Yeah I realised that haha, Did it at half 7, Ill put it to the mrning haha, those uprights in the gantry will be behind the horizontal box sections

[JAZZCNC]

ahh yeah, just looked at this site, not too bad at all [url=http://www.ondrives.com/p/9519/31t1025-2]31T10/25-2 | Ondrives[/url

Nah too expensive try these people or go to your local bearing supplier as they are often cheaper and will sell without Vat for cash.
http://www.beltingonline.com/timing-pulleys-bars-272/

Your gantry is looking slightly better but still needs work. Also by the looks of it you haven't given much thought to how the ballscrew end bearings will mount and how the motor will connect.? Has it stands now it can't be done without special machining and using FF/FK bearing blocks.

10mm plate would be better for the bearing plate 6mm is still a bit flimsy.! Can't afford any flex or resonance here.

[FlyHighRC]

Nah too expensive try these people or go to your local bearing supplier as they are often cheaper and will sell without Vat for cash.
Timing Pulleys

Your gantry is looking slightly better but still needs work. Also by the looks of it you haven't given much thought to how the ballscrew end bearings will mount and how the motor will connect.? Has it stands now it can't be done without special machining and using FF/FK bearing blocks.

10mm plate would be better for the bearing plate 6mm is still a bit flimsy.! Can't afford any flex or resonance here.

Do you have any SW fil;es for the pulleys? what Pulley width? Im assuming 16mm should do it? That belt must be very strongi guess? When the gantry comes to a sudden stop wont its inertia and the belt cause it to pendulum a little?