Y linear rails conversion kit for Xinkebot Orca 3 IDEX

Hi!

In my opinion and experience, the 410x410 bed is way too heavy for the Nylon V-slot wheels the Xinkebot orca 3 IDEX 3D printer comes with. After replacing them a 3rd time this year (for improved PC wheels) I decided to just change the system out for linear rails.

Also, I have noticed quite a bit of Y ringing, so I also made it compatible with 9mm GT2 belts, also also, the strain relief of the bed cable (which is just stuck on from the factory) came loose on my machine... Therefore I designed an improved strain relief, which you can screw into the metal gantry. 

Here I will post every part you'll need, should you want to modify it yourself;

You'll need;

2 sets of;

• MGN12 linear rail, 530mm, centred holes
• 2x MGN12H carriages (I suggest going for low preload if possible)

You'll need to print;

• 2x MGN12 mount
• 1x Mount-BedPCB
• 1x BedPCB-strain-relief

You'll need to buy;

• M3 bolts and nut to mount rail

You will also need to do my 9mm belt conversion. You can find this on my profile.

Note; you will need to drill additional holes in the top-plate of your machine, and this will void your warranty. Please attempt this upgrade at your own risk.

Instructions;

Removal of the old system;

1. Remove Y motor and drop it down.
2. Remove the Y belt from the back idler pulley.
3. Remove the 2020 profile caps on the front of the machine.
4. Carefully ride the bed assembly to the front of the machine, and be careful with the cable.
5. Turn it over and lay it down on the 2 2020 profiles.
6. Disconnect and remove the bed breakout PCB.
7. Remove the 2 2020 profiles from the machine.

Preparing the bed gantry;

1. Carefully remove all of the locknuts that mount the bed to the gantry and remove the 2 parts. Put aside the bed, springs and nuts.
2. Remove the 4x M5 bolts that hold the V-slot wheels to the gantry and remove this part (middle gantry support will come with
3. Mount the 2x MGN12H carriages to the “MGN12 mount” (2 times). Make sure the carriages stay on the rails to make sure they do not lose any bearings
4. Mount the “MGN12 mount” to the bed gantry of printbed
5. Replace the belt mount with the new “9mm_beltmount”. Make sure to drop in the M3 square nut to clamp the belt later on
6. Replace the bed PCB mount with the new “Mount-BedPCB”
7. Replace the cable strain relief with the new “BedPCB-strainrelief” (drill 2 holes in the aluminium gantry, tap them with M3 thread, and screw them in place

Mounting the new system on the machine;

1. Place the bed system with 2x rails back in the machine. Align the 2 outer holes on the rails with the 2x M5 holes in the frame
2. Mark the location of holes of the rails and drill 3,5mm holes thru the top plate (I suggest removing electronics first)
3. Screw every screw with a M3 locknut, but make sure to not tighten them
4. Move the bed back and tighten the rearmost M3 bolts of the rails
5. Move the bed forward to align rails, and tighten the front M3 bolts of the rails
6. Tighten all the M3 bolts in between to mount the rails in place
7. Reattach the Y motor and replace the belt. 

All set and done! 

Results;
I now print 140mm/s at 2500mm/s2 acceleration and 25 XY jerk. No problem, layershifts nor ringing (with input shaping)

The above instructions are just general instructions. I assume that everybody interested in this upgrade has intermediate knowledge of mechanics and therefore can fill in the other required steps (like screw in this bolt, then this bolt, etcetera)

Again, this is an advanced procedure and will be at your own risk.

Please let me know if you need any assistance.

You can also find other upgrades for the Xinkebot Orca on my profile.