a Steel Box Section Build with SBR20 & Ballscrews Plus a few questions

[JAZZCNC]

If you are ordering anyway then I would get 1610's if it's being used mostly as a wood router because you'll want the extra speed they offer. Don't worry about torque because if you use correct size steppers with a decent amount of volts you'll have more than enough torque. If your just cutting aluminium with it then 1605 will be fine with a 1:1 ratio as you won't cut much above 3mtr/min and you'll get around 5-6mtr/min rapid speeds which is more than enough for smaller machines.

Fred's spindles are fine, I have fit dozens and not had any troubles yet, they are pretty much all the same and in general, I have fit 100's over the years, and less than 6 have gone faulty on me.

[grain_r]

If you are ordering anyway then I would get 1610's if it's being used mostly as a wood router because you'll want the extra speed they offer. Don't worry about torque because if you use correct size steppers with a decent amount of volts you'll have more than enough torque. If your just cutting aluminum with it then 1605 will be fine with a 1:1 ratio as you won't cut much above 3mtr/min and you'll get around 5-6mtr/min rapid speeds which is more than enough for smaller machines.

Fred's spindles are fine, I have fit dozens and not had any troubles yet, they are pretty much all the same and in general, I have fit 100's over the years, and less than 6 have gone faulty on me.

Hey Jazz Thank you very much for that, Righty Oh I will add them to the order it won't be a bad thing because the originals I have don't have much room for a pulley. I'm sure they will get used for something else one day.

I will add the spindle too and then just hope that the customs people don't think it looks interesting enough to open :)

I'm still undecided to go with the oem or Hiwin Rails the difference is $325 dollars and because I want to do it right I'm leaning to the Hiwin.

Thanks

Rob

[JAZZCNC]

I will add the spindle too and then just hope that the customs people don't think it looks interesting enough to open :)

They won't probably open it but that doesn't mean anything really, they will always charge you VAT and duty based on the invoice amount.

I'm still undecided to go with the oem or Hiwin Rails the difference is $325 dollars and because I want to do it right I'm leaning to the Hiwin.

Well in that case then I'd go with Hi-wins.

[Clive S]

I have don't have much room for a pulley.

Fred will machine what ever length you want for the pulley, tell him what length you want the F length to be.

That is where the pully fits.if you make it too long you can always cut it off.25-30mm is fine