B1XZ Assembly

This instruction is for the B1XZ mode for Biqu B1 3d printer.

Prepare all tools and print all parts

All printed parts can be found here

https://www.thingiverse.com/thing:4783263

Instruction vesion: V3 alfa (10.Apr.2021)

• Power off printer
• Disconnect all cables
• Unmount printhead
• Unmount X granty
• Unmount Z portal and remove Z carriages
• If reusing wheels then disassembly v-wheels from Z carriages
• Unmount motors and prepare to reuse

Put M5x40 [1a] bolt into [item 1]. Use this order to connect [item 1] (B1XZ_z_carriage_x_rail_cover), the 10mm washer [item 2], nylon washer, 2x F695-2RS bearings, nylon washer

Put second M5x65mm [2a] bolt into using order: [item 1], the nylon washer,2x F695-2RS bearings, nylon washer, 10mm washer [item 3]

Use M4x40 [3a] to connect [item 1] and [item 4] (bolt must pass thought [item 4])

Use M4x35 [4a] to connect [item 1] and [item 5] (bolt must pass thought [item 5])

Put on top [item 6] screw bolt [4a] directly into [item 6], other bolts must just pass thought.

Install 3rd wheel into B1XZ_z_carriage_main_3rdwheel_mnt_right.stl

(use order M5x30(M5x35) bolt, washer, nylon lock nut, and wheel)

• Pre insert bolt from the flat side
• Put washer inside
• Put the wheel on top of the washer
• Put nylon lock nut on top of the wheel (use one more washer optional)
• Holding nut by open-end wrench from inside tighten/move the bolt all way to outside
• Check and tighten the nut to avoid wobbling the wheel but do not over tighten it wheel must rotate freely
• If using M5x35 put a nut on the outsize end of the bolt

• Put [item 3] on the previously assembled part using bolt [1a] to screw it into the plastic. Bolt [1b] must just pass thought
• Push bolt [1b] and tighten with a nut with a nylon lock nut on top.
• Put [item 2] and screw by bolts (if using short m3 bolts [2a]/[2b] into the plastic or push [2a] way if using long m3)
• Put [item 3] and screw by bolts (if using short m3 bolts [3a]/[3b] into the plastic or push [3a] way if using long m3)

• Put side wheel on M5x40 (or M5x45) using the order: printed washer 6mm wide, washer, wheel, washer, M5 nut with nylon lock.

• Put the second wheel using similar order on the long (M5x65)

• Unscrew bottom nut (3rd wheel) from original x carriage (keep it as is just remove the nut, or replace bolt by longer 5mm length, keep in mind bolt head must be the same style)
• Put x-plate and secure it temporarily with two top M3 bolts
• Push bottom bolt and put back bottom nut and secure it (do not put bottom block yet)
• Put x-carriage on x extrusion rail and using open wench rotate the bottom eccentric nut to have good enough wheels contact with the rail

• unscrew a bit 2 locking bolts [6a] and [7a]) on both z -carriages
• push gently 2020 x rail into place on both z -carriages
• use top and bottom bolts ([8a]/[9a]) to secure 2020 x rail but leave them a bit lose (will tighten them later, x rail need to play a bit in place)

• unlock 3rd wheels on z carriages (unscrew [1a] and pre-open a bit in order to put rails inside more easily)
• push gently x granty into z portal (the x rail must be a bit loose on z-carriages to play a bit and be aligned later)
• move it all way up and secure it on top position temporary by any rope
• put z portal into place in the bottom B1 block
• secure z portal into the place by all bolts

• secure/tighten 3rd wheel brackets on both z carriages good enough (but do not over tighten it)
• remove rope/zip tie from x granty
• move whole x granty on z-axis down /up serval times to allow it to stay in place
• move it up and align on top z-carriages - they must touch the top rail.
• be sure that is x granty is parallel to top rail and secure it on z-carriages from both sides
• double-check that x granty is moving down/up easily and check all
• check wheels on z-carriages and tighten 3rd wheel brackets (but do not over tighten it) wheels should not rotate easily when one wheel is blocked, but x-granty should move easily on z-axis

Put constant tensioner on top 20x20 rail but leave it on topmost position (leave mounting bolts loose until belts be installed and tensioned)

Use instructions from section "Update 08/04/2021" published here https://www.reddit.com/r/biquB1/comments/lyn1io/ne...

[to be moved instruction here soon]