Sovol SV08 Multiple Motion System Upgrade.

[dwuk]

As per my previous posts on this thread I am embarking on a fairly complicated re-engineering of an SOVOL SV08 (Voron 2.4 clone) to be Duet 6HC controlled.

The build will be done in a number of phases:
Phase 1 - Dual Gantry, Multi Motion System - needing a Duet 6HC, Mini5, 2x 1LC
Phase 2 - Dual Idex - needing another Mini5, and further 2 x 1LC
Phase 3 - Tool/Nozzle Changer - A few more 1LCs
Phase 4 - AMS - ideally finding a way to connect Bambu Lab AMSs - if not some sort of MMU solution - which will need more Mini5s
Phase 5 - Occasionally moving bed

Printer received, Phase 1 2nd Gantry initial design done, parts for 2nd gantry ordered.

Basic additional belts design here - red and yellow belts are the new ones for the 2nd gantry - which are basically just a duplicated of the Voron 2.4 CoreXY setup - but inside at the back.

Now working on how to add mini Z hoppers for parallel printing /mesh correcting the two print heads - Am thinking I will start with a Stealth Changer - as it has the bushes to allow clean up and down movement, plus it is a good foundation for phase 3.

The smallest Stepper I can think is a Nema 8. - they are only about 45g - hope they will be powerful enough if I use a lead screw - might have to add some gearing if not.

So am thinking I might be able to add it into the stealth changer something like this.

Update - I think a Nema14 Pancake could also work even better - so will probably try one of those first

[o_lampe]

@dwuk Whenever I need toothed idlers or gears I choose @droftarts 's openScad pulley library. (don't have the actual link RN)
When I print them on a resin printer (fudge factor settings to 0 ) they are spot on. and with "Anycubic's tough resin" they last very long (almost like nylon gears)

Regarding z-hop: I think you should put it under or on the far side of the 2020 beam. Everything not-toolchanger-related could go there for better balance.
Don't forget an endstop for those hoppers.
The NEMA08 motors are quite weak, they'd definitely need gear reduction. What's the pitch of the mini leadscrews?
The smallest steppers I've used were salvaged from old DVD drives. You can still find them on Aliexpress for pennies, I guess.
The whole lift and bearing thing could probably be done with excenter bearings. (two flys with one clap)

[droftarts]

@o_lampe said in Sovol SV08 Multiple Motion System Upgrade.:

Whenever I need toothed idlers or gears I choose @droftarts 's openScad pulley library. (don't have the actual link RN)

Thank you for you custom! https://www.thingiverse.com/thing:16627

@dwuk said in Sovol SV08 Multiple Motion System Upgrade.:

I am embarking on a fairly complicated re-engineering of an SOVOL SV08

As a fellow SV08 owner, I look forward to updates on your project. I haven't done much with mine, apart from update it to mainline Klipper and replace the hotend with the newer version. It prints well, though Klipper feels rather alien to me. I plan to make some panels for it so it can print ABS/ASA soon, and convert it to Duet later, but I need at least one printer that's not in pieces, so I need to finish other projects first! I may do one of the toolchanger mods on it, initially just to be able to change out the toolhead for other hot end and extruder combinations.

Ian

[dwuk]

@o_lampe Thanks - will try and place motor as far over. Have ordered a Nema14 and Nema 8 and will see which ones works best. Can you explain a bit more about the excenter bearings - do you have any links - have tried a few searches and can't quite work out what you are referring to.

[dwuk]

Duet hardware order now in - went for the following from Uni3dverse who were the only uk reseller I could find that stocked everything I wanted for phase 1.

Quite a lot more expensive than the whole Sovol printer - but Duet/Reprap seems to be the only way to go at the moment for multi axis / multi motion systems.

[dwuk]

@dwuk Modelling for first re-modelled part now complete - existing gantry move of cogged pulley, plus making space for extra belts. - ready to test print tomorrow.

Split part into two for printing - as existing part injection moulded.