Hello everyone,
I’d like to suggest an upgrade to reinforce the axes and minimize play. I’ve added a parallel linear guide designed to address the shortcomings of the “bracing kits.” This modification compensates for the lack of rigidity in the printer, especially when dealing with the moment forces on the tool head and the Z-axis during CNC operations.
(Because it don’t remove moment’s around axes y on the head and x on z axis. Try to lift your printer (not completely 
) by the head and you we will see the loose, and bracing kit don’t help a lot)
The central space provides easy access to the screws for changing the head.
It is compatible with bracing kit, quick swap kit and all head
You are open to improve it, I give you stl and fusion360 model.
For each axis, you’ll need:
1x MGN9H 500mm linear guide (for the Z-axis, you’ll need to trim 3 mm or shift the hole positions by one)
4x M3x8 hex socket screws (for the linear guide carriage)
12x M3x12–16 hex socket screws (to secure the linear guide)
6x M4x16 hex socket screws (to secure the support to the printer)
For the printer head:
If you’re currently using M4x10 screws, replace them with M4x14.
If you’re using M4x14 screws, replace them with M4x18.
Print parameter:
No support needed, I use ASA for the head element and PETG for linear guide support. PETG can be used for all. (30-40% infill)
Limitation:
The connection between the head and the new linear guide is still slightly flexible. The support for the guide doesn’t make full contact across the entire width of the aluminum alloy core of the Snapmaker axis.
(Pictures will be included in the next post.)
stl + f3d.zip (519.3 KB)
