M4 screw adapter for Kingroon (KP3S PRO S1 / KP3S PRO V2 Dual Rail Z-Axis MOD)

Since the main upgrade model is designed to be mounted with M5 bolts, and it’s mentioned that M4 bolts can also be used (see the description of the main model for details), I created this adapter so you can use M4 bolts perfectly with the model.

Here’s what you need to do:

• Print with 100% infill
• Print 9 pieces just to be safe
• You’ll need M4-16mm bolts for a perfect fit without adjustment (I used M4-20mm bolts, so I had to add extra washers)
• No need to drill larger holes — I’ve already accounted for the seam clearance (hopefully!)

I use KP3S Pro V2, not Pro S1, so this dual Z-axis MOD is used for all Pro versions.

OH! I also added a way to put my Kingroon on the table for upgrade, which I hope helps you know a helpful way to set it down.

*As stated in the main model’s description, this is a fairly advanced upgrade that requires experience and mechanical skills. Please make sure you’re capable of carrying it out properly.