Definately a scrapyard challenge

[JAZZCNC]

I may be sulking but I am not offended.

Well let me have ago.!!. . . It's my special talent offending!!. . . . Ask my parole officer:whistling:. . . . . Only on both accounts.

Bruce I'd be very weary with both the Channel and the angle they could both give you more trouble than they are worth.?
Angle and channel are very rarely 90deg or very flat.! If the angle for the bearings hisn't perfectly 90deg and flat it will cause binding in the bearings. If compounded with the channel the rails are sat on not being square or flat then you'll have a bear of a time with sticking.!
Both the Angle and channel will need bracing to fight flex and resonance, esp where the angle meets the channel used for gantry sides.

Can I just ask why you are using channel,angle and 10mm plate in all your designs.? Do you have the material or a cheap source.?

If you have the 10mm plate then why not build using a bolted and braced design which incorparates the gantry sides to increase strength and ridgidty. If braced enough even 9.5mm plate can make a very stiff gantry and Z axis.

[routercnc]

If it's any help here is a link to the stiffness calculation spreadsheet I posted some time ago.

http://www.mycncuk.com/forums/showth...ess-calculator

Thanks