Advice on Mammoth CNC Router Build - Steel Framed - 2440mm x 1220mm cutting area!

[JAZZCNC]

Any other glaringly obvious mistakes in the design??

Not glaring but you have gone too far with removing the diagnols but not far enough in other places.?

I would have diagnols at each end of the sides. But would remove the central upright and re-space others on all the Bed support frames.
Would also have a Bed support frame on each side upright and not laid flat in like you have in centre.

The rest looks ok.

EDIT: I would also on the outer End bed supports have diagnols on inside lower beam which fastens to the sides to help hold frame square while setting up and bed frame is fastened. Like this but larger and to suit your design.

[Wejjmeister]

Will make the recommended changes tomorrow in sketchup, im getting square eyes now and RSI from that software, its good but frustrating!!

Also done some research on the rotating nut idea and like it a lot, need to make a few mods to allow it to work. Can you guys tell me which Blocks you use to hold the ballscrews in situ tho, are they FK blocks?

Also where do you get the actual rotating nuts from as I can only see the manufacturers, not any suppliers etc, Zapp dont seem to list them??

Any help would be very much appreciated!

Thanks again!!

[Jonathan]

Answer to both your questions is make your own, or win the lottery so you can buy some.

[Clive S]

Also where do you get the actual rotating nuts from as I can only see the manufacturers, not any suppliers etc

You could try Jonathan ..Clive

[Wejjmeister]

Haha, thanks, just found this article

http://www.mycncuk.com/forums/showthread.php?t=3340

Awesome!!

[Wejjmeister]

Read the entire thread last night and decided exactly that!

Jonathan, is there any possibility you could produce a pair of the mk3's from said thread? I would gladly pay you for these as I simply don't have access to the required tooling (currently have a large lathe, that's all)??

If so, do you have any sketchup diagrams so I can incorporate them into my design?

Many thanks.

[Boyan Silyavski]

The Sketch file i made is in Jonathans thread post #83 http://www.mycncuk.com/forums/linear...html#post52272. so you can download it and incorporate it in your model. However i advise you to produce it, when you 100% decided on the exact motors/steppers, servo, size, etc. / and the machine drawing is finished, as maybe you will need to redesign the motor holding plate, in context of your design, or just leave that plate at last, however have in mind that if you decide to drive the gantry with 1 motor for example, this will affect the whole design, as the hole where the belt goes in should be at different place. You can start though with ordering the bearings, the rotating part +the lock nuts and pulleys, that's what i did

[Wejjmeister]

Bringing this one back to life guys. Life's been pretty crazy lately but I should have a little time for this now, I've sold a few of my projects and am trying to consolidate everything so that I have a little more focus.

Question for silyavski... Are the rotating nut diagrams proven, ie a replica of Jonathans mk3 or are they a custom design you came up with? Just asking as I want to know if they work wether I can send the file to the machinist to get them made or not.

Cheers!!

[Lee Roberts]

Bringing this one back to life guys. Life's been pretty crazy lately but I should have a little time for this now, I've sold a few of my projects and am trying to consolidate everything so that I have a little more focus.

Question for silyavski... Are the rotating nut diagrams proven, ie a replica of Jonathans mk3 or are they a custom design you came up with? Just asking as I want to know if they work wether I can send the file to the machinist to get them made or not.

Cheers!!

I think its his own design, the files maybe in the open source section, its been awhile now so I could be wrong.

.Me

[Wejjmeister]

I think its his own design, the files maybe in the open source section, its been awhile now so I could be wrong.

.Me

Thanks, shortly after posting that comment I found some file Jonathan had uploaded, so Im currently trying to integrate that into my design.

Here is the Mk4 frame layout, any opinions guys? Ive taken on board other designs in this one, Im making the bed adjustable too on holes inside the legs, so it will have further movement, will that affect anything else do you think?

Thanks in advance!