L Style Gantry on a 6040 sized machine?

**Sterob** · 04-03-2020

Originally Posted by AndyUK

I'd have said option A will lead to a stiffer machine, simply because you've increased the mounting distance between your rails? What does the gantry deflection calculator tell you?

Haven't looked at that . Will have a look now.

Later.....

Thats going to take a while to get my head around.....lol

**Sterob** · 05-03-2020

Its basically a 6040 sized bed but the frame will be larger so the tool will reach the whole bed area ( at this stage. )

Re: 90 x 180, yes I agree it will be huge. Most suppliers don't seem to offer anything between 90 x 90 and 90 x 180.
I have seen 90 x 135 ( and that is my preference ) but that seems uncommon.

Just got a quote back from Parts-On in the UK. 800 pd total. 350 pd of that is postage. doh......Works out to $1500 AUS.

Might have to conceed defeat and use 80 x 80, etc......

Not that keen yet.....

**JAZZCNC** · 05-03-2020

Originally Posted by Sterob

Its basically a 6040 sized bed but the frame will be larger so the tool will reach the whole bed area ( at this stage. )

That's ridiculous overkill and a complete waste of money. I've built many machines this size and larger using 45x90 using the "L" design gantry and they are plenty strong enough for a machine this size. You'll get away with a much smaller profile and 80 x 120 would still be massive overkill for a machine this size.

**Sterob** · 06-03-2020

Originally Posted by JAZZCNC

You'll get away with a much smaller profile and 80 x 120 would still be massive overkill for a machine this size.

Yes, but 80 profile doesn't have the 45mm spacing of the slots.

**Voicecoil** · 08-03-2020

Yes, but 80 profile doesn't have the 45mm spacing of the slots.

If you're set on using 45mm spacing stuff, there's always this! https://kanya-uk.co.uk/product/e01-1...rusion-90x135/

**Sterob** · 08-03-2020

Originally Posted by Voicecoil

If you're set on using 45mm spacing stuff, there's always this! https://kanya-uk.co.uk/product/e01-1...rusion-90x135/

thanks...will check them out.

**Voicecoil** · 05-03-2020

Check out Misumi (massive Japan based industrial supplier) - they have a fair range of big profiles and appear to have an outlet down under and whilst not always the cheapest you might get much cheaper shipping.

**Sterob** · 05-03-2020

Originally Posted by Voicecoil

Check out Misumi (massive Japan based industrial supplier) - they have a fair range of big profiles and appear to have an outlet down under and whilst not always the cheapest you might get much cheaper shipping.

Thanks Voicecoil. I'll have a look for them.

EDIT: I just tried to register and they don't sell to individuals.....I can't win.....

**pippin88** · 05-03-2020

Misumi USA appears to be great and happy to deal with small orders.

Misumi near Australia (I think Singapore) only want to deal with businesses.

**Sterob** · 06-03-2020

Maybe I could drop the whole build back to using only HD 45 extrusion?( 45 x 90 for the sides and gantry.)
Would be alot cheaper and there are a lot more size options...... as long as it would stiff enough.
Can do some simulations in Fusion I guess.

I am a little concerned about attaching 45 extrusion to side plates using just the 2 holes in the centre. That does not seem the best idea.
Is there any way to utilise the square hole in each corner?