Ender 7 Belted Kinematic Bed Mount (Triple Z)

A (Hopefully good) bed mount upgrade for the Creality Ender 7.
 

I got the job of designing a new bed mount for a Ender 7 as the original mount was basically unusable, the bed wobbles so bad at the print results are horrible even at 20mm/s.
So I though I might as well go all out and design a robust kinematic bed mount for it.
This should fix most vibration issues as it's a REALLY rigid setup as well as give you a nice, truly leveled bed.

It has not been tested yet, so please report back if there's any issues.
This was also made to fit an Ender 7 with a swapped toolhead, so I’m not 100% sure if the bed could reach the original toolhead, if this is the case, you could just swap out the 8mm tall bed mount spacers (and screws) to something taller, that should fix the issue.

BOM: (There will be some extra screws, washers etc.)

Hardware:

• 3M 9mm 2GT Belt
• 3x 188mm Closed Loop 2GT 6mm Belt (Same As Voron Belts)
• 6x 20T Ø5 ID Pulley For 9/10mm Belt
• 3x 16T Ø5 ID Pulley For 6mm Belt 
• 3x 80T Ø5 ID Pulley For 6mm Belt 
• 3x 60mm Ø5 Rod
• 3x 30mm Ø5 Rod
• 50x 5x8x0.5mm Shim
• 50x 5x8x1mm Shim
• 20x 12x16x1mm Shim (Not really necessary as the bearings shouldn’t move without them)
• 4x Ø4 ID 8mm High Spacer (Preferably as thin as possible, these are the spacers the bed will be mounted on)
• 4x Ø4 ID x >Ø10 OD 2mm High Spacer (For Use Under The Spacers Above So That They Don’t Fall In To The Extrusion Slots)
• 3x Ø6 ID x Ø8 OD 3mm High Spacer
• 15x 625 Bearing
• 60x M3 2020 T-Nut
• 4x M4 2020 T-Nut
• 40x M5 2020 T-Nut
• 3x 170mm 2020 T-Slot Extrusions Tapped On Both Sides (Please Make Sure To Get 6x Screws And Spacers That Matches These Threads For The Blind Joints)
• 2x 210mm 2020 T-Slot Extrusions With Three Through Holes (15mm From Each Side And One In The Middle, All On The Same Plane. The Holes Should Match The Screws Used For The Blind Joints)
• 3x M6 SI Type Ball Joint Rod Ends
• 3x 175mm MGN12H Rails (The First Hole Must Be 12.5mm From The Edge)
• 3x 345mm MGN12H Rails
• 3x 10mm ID Rubber Grommet (Not Proprietary, These Will Only Be Used If You Drill Holes For The Z Motor Wires Next To Each Motor)
• 3x Nema 17 (I Would Recommended The LDO-42STH48-2504MAC As You Will Get A Better Z Resolution)

Screws: 

• 50x M3 x 6mm Button Head
• 50x M3 x 8mm Button Head
• 50x M3 x 16mm Button Head
• 50x M3 x 18mm Button Head
• 10x M5 x 14mm Button Head
• 10x M5 x 16mm Button Head
• 10x M5 x 18mm Button Head
• 20x M5 x 22mm Button Head
• 20x M5 x 30mm Button Head
• 10x M5 x 35mm Button Head
• 10x M6 x 22mm Button Head
• 100x M3 x 8mm Cap Head
• 50x M3 x 10mm Cap Head
• 50x M3 x 16mm Cap Head
• 50x M3 x 20mm Cap Head
• 50x M3 x 40mm Cap Head
• 10x M5 x 45mm Cap Head
• 10x M6 x 30mm Cap Head
• 20x M4 x 18mm Countersunk
• Remember The Blind Joint Screws For The Bed Mount Extrusions

Heat Sets:

• 50x M3 5mm OD 4mm High Heat Set
• 50x M3 5mm OD 6mm High Heat Set (This Is Just For Extra Strength For Where It Fits, If You Want To Save Some Money, Just Use 4mm Long Inserts Instead)
• 20x M5 8mm OD 8mm Height Heat Set
• 10x M5 8mm OD 10mm Height Heat Set
• 10x M5 8mm OD 12mm Height Heat Set (This Is Just For Extra Strength For Where It Fits, If You Want To Save Some Money, Just Use 10mm Long Inserts Instead)