I created a Hot Wheels 1:64 scale car lift after I was not able to find anything that suited my requirements. This has adjustable arms via an M50 x 50mm screw and a square nut inserted into the back of each arm. I added markers to front of the posts to help align the two arms when adjusting their heights. For the arms, I used spare square nuts from my extra Prusa parts that measures about 5.44 mm width/depth and 1.70 mm thick. I just uploaded a new arm that will fit a square nut about 5.44 mm width/depth and 2.22 mm thick.
I printed mine in PLA and hopefully it will stand the test of time. If not, I will find another material to print it with.
None of these prints requires supports and should be printed in the following orientation. Note: I just added a new cap that inserts into the post and the top is the same diameters of the post for a cleaner look and is not shown in the screenshot below:
For the top hole in the arm, used the following technique to create a sacrificial layer (around the 2:40 min mark):
You can see the sacrificial bridging (see the blue lines) in this screenshot. Important, to remove the sacrificial bridging, I found it best to push an M3 screw from the bottom to the top to make sure the extra material does not caught in the cavity where the square nut is inserted.
When printing the base in my Prusa MK4 with an MMU3 unit, I cut the base as shown below using the following cut parameters (outdated, please see below):
I just added an MMU version of the base to make it easier to color smart fill the span.
If you find this item useful, please consider making a donation of any amount to the Phelan McDermid Syndrome Foundation (PMSF) under AudienceOfOne:
Thanks, AudienceOfOne
The author marked this model as their own original creation.