Aluminium Profile Type Router - Initial questions

[CNCRY]

Thanks everyone for the replies , no way I'd get throug h the build without the help here !
So I think the best option is going to be new transformer, with the cost of the drives at risk, and fact I'd prefer the simplest approach !
So to be 100% here, 60v or 55v to be safer if supply varies to high side . Will I lose much power @ 55V? And stick with 750VA?
Will PM you about other transformer if interested jazz.

[Clive S]

Thanks everyone for the replies , no way I'd get throug h the build without the help here !
So I think the best option is going to be new transformer, with the cost of the drives at risk, and fact I'd prefer the simplest approach !
So to be 100% here, 60v or 55v to be safer if supply varies to high side . Will I lose much power @ 55V? And stick with 750VA?
Will PM you about other transformer if interested jazz.

Personally I would go with 60V and 625Va or even 500Va

[Andrewg]

Watching thread with interest, as admire how you have got stuck in and learning as you go. I am trying to get a clear plan and design before spending a penny......so happy to learn from your journey.

No help on electricals, but back to printer paper plans. I use this all the time for woodworking templates. You want a spray can of 3M '77' good for temporary and permanent bonding light weight materials.

Keep going and keep sharing gotchas!

[CNCRY]

Watching thread with interest, as admire how you have got stuck in and learning as you go. I am trying to get a clear plan and design before spending a penny......so happy to learn from your journey.

No help on electricals, but back to printer paper plans. I use this all the time for woodworking templates. You want a spray can of 3M '77' good for temporary and permanent bonding light weight materials.

Keep going and keep sharing gotchas!

Thanks Andrew - I researched lots before starting but I find its easier to get started and "fix" some variables in the design otherwise I was going round in circles thinking and changing ideas. Probably means I will have a few gotcha's but hoping not too many! the help on this forum is great also, and helping me get a machine built which was just a pipe dream 6 months ago.

[Doddy]

Will I lose much power @ 55V? And stick with 750VA?

As I understand it (and I might misunderstand the theory) you're not losing power, as such, but top-end speed/torque. But listen to Clive.

[CNCRY]

Gantry Sides done - need to counterbore the M12 bolts slightly but waiting on a 13mm drillbit for clearance hole..


Ended up ordering a new 60V output transformer. Fingers crossed I'll also have the closed-loop steppers and drives turning up in next few days. :)
Lichuan 5.5Nm - LCDA86H+LC60H2127 > https://www.aliexpress.com/item/3279...44bf3421SaYv5O

I'm thinking about cable management, its probably been a bit of an afterthought so far, but I'm thinking having it in my hands will be easier to "visualise". From other post's I'm thinking something like https://www.ebay.co.uk/itm/R38-18mm-...K/163618534489 or will that be underkill?
I'd have 2 x 8mm coolant pipes (and 1 air TBC), 1.5mm CY for spindle, Z and Y motors, encoder cable? Y and Z limits.

Also trying to find the right pulleys for Y and Z - planning on 15mm HTD5 (10mm bore) in 1:1 ratio - but how many teeth do people go for?

[JAZZCNC]

Also trying to find the right pulleys for Y and Z - planning on 15mm HTD5 (10mm bore) in 1:1 ratio - but how many teeth do people go for?

20T are what I find best, don't go less than 18 because it makes it difficult with the boss size and you don't have much left for the grub screws. Also, don't try boring them by just drilling on a drill press, they need to be drilled and reamed accurately. I suggest if you haven't got a lathe or a very very good drill press or Minimill then buy them already bored.