These are printable components I designed to replace some missing hardware for a few babygates which were given to us by a friend when we moved int our new home. We were provided 2 babygates (Thank you Donatonis!) that just needed hardware, as only one piece was located. (The grey piece in my hand is the original unit.

The original sample I had used was an M8 size thread. I only had 1/4" and 5/16" at the office in the lengths I needed for this to work, so I designed it for both. My particular babygates seemed to work best with the 5/16" option. They still installed smoothly, but didn't have as much slop in them as the original hardware, so I actually feel they are more secure.

NOTES:
There are 2 sets of adjusters, one for 1/4" hardware, and one for 5/16" hardware. Use whatever is best for your gate.

These are designed to use SAE spec hardware, so for the 1/4" designs, the head of the bolt and size of the nut needs to be 7/16". For the 5/16" designs, the head of the bolt and size of the nut needs to be 1/2". I used bolts which were 4-1/2" in length, and that was perfect for me. Use whatever you need for your doorway. Just remember that when the gate is tightened into place, there should still be at least 1-1/2" of thread in the gate.

Printed in PLA
Sliced using S3d.

For the feet, I printed using variable infill, with the "solid" bottom portion of it (from the bolt head to the flat face contacting the wall) with 90% infill, and the remainder of it at 50%. This is so that the force applied by the head of the bolt is distributed as evenly as possible.

The adjuster I printed at 50% the whole way through.

It's not required, but I used a little Gorilla Glue to secure the feet to the head of the bolt, and the nut in the adjuster. However the tension once installed will keep everything in place.

You could put a little rubber nonslip pad from Home Depot on the feet if you wanted, but mine seem to be holding up great, and when I had removed them to check, there was no visible damage or indentation to the door jamb.

I hope these help someone else out as well.

Side note, they make great leveling feet and adjusters too. I just put a set on a small work table I built!