Bench-top or welded frame

[driftspin]

Bigger than my StarMill (160x100!). Height isn't a massive issue for me (at least not as yet), but 200mm would be an aim. X/Y = around 600x400 was my goal.




Only the crazy people go vertical! Actually, it's something I had just started to think about - I know Dean here has done this in the past. That might be the next machine.



(assuming you mean square across the Y-Axis) Yes, a beam across the top, with gusset plates to hold square (sorry, the design is obviously incomplete - more to get the concept right in my mind before burning hours on Fusion 360).



Yes, more steel to be added yet. As above, this is just a basic geometry sanity check.



That's exactly why I posted this. Placing the spindle where I did I'm very conscious that it's putting a large force on the rails. Having said that, better and brighter people than me have suggested that the rails are more than strong enough for anything a small machine like this is likely to throw at them, and Dean's earlier comment re. most mills - yeah - they'll place a similar cantilever load on the rails as well.

Hi doddy,

What is your main problem with exiting 6040 designs?

I feel like the " lean back " gantry design is most space saving.

Do you think 20 mm alu gantry sides will cover your rigidity needs?

http://www.mycncuk.com/showthread.php?t=11610

like that one... but a bit smaller.


Grtz Bert.


Verstuurd vanaf mijn SM-A320FL met Tapatalk

[Doddy]

Hi doddy,
What is your main problem with exiting 6040 designs?

Significantly - I want to do as much of the build myself, and (to an extent) I can work with steel. Having said that there's a recent threads that show some very enterprising use of hand tools (though throwing a woodworking hand held router through 20mm of alu would certainly be different to what I'd normally use it for). The design (once I understand it!) is something that I can build with the equipment that I have. To some extent there's a certain curiosity value as well.

[driftspin]

Significantly - I want to do as much of the build myself, and (to an extent) I can work with steel. Having said that there's a recent threads that show some very enterprising use of hand tools (though throwing a woodworking hand held router through 20mm of alu would certainly be different to what I'd normally use it for). The design (once I understand it!) is something that I can build with the equipment that I have. To some extent there's a certain curiosity value as well.

For cost... steel is the cheaper way to build.. there is a catch though.. steel is not easy to get straight/flat enough to mount linear rail directly.

Did you decide on square or supported rail?


Do you have access to tools to get the steel flat level and straight ?

If not.. epoxy is a solution... but not very easy to do.. and not cheap.



Grtz Bert.

Verstuurd vanaf mijn SM-A320FL met Tapatalk

[driftspin]

For cost... steel is the cheaper way to build.. there is a catch though.. steel is not easy to get straight/flat enough to mount linear rail directly.

Did you decide on square or supported rail?


Do you have access to tools to get the steel flat level and straight ?

If not.. epoxy is a solution... but not very easy to do.. and not cheap.



Grtz Bert.

Verstuurd vanaf mijn SM-A320FL met Tapatalk

what about this one?

http://www.mycncuk.com/showthread.php?t=11152

Verstuurd vanaf mijn SM-A320FL met Tapatalk