Monoprice Wanhao Maker Select i3v2 Spring Cups

by Nerys, published

Monoprice Wanhao Maker Select i3v2 Spring Cups by Nerys May 24, 2016
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None of the cups on thingiverse fit my springs. not sure if mine are different from the wanhao ones?? they were all too small (by a lot)

so I made my own. I had to print them at 103% (on x and y only leave z at 100%) They NEED to fit LOOSE and not restrict the springs or they will inhibit them from "rising" on fine adjustments. so clean up the inside also if your printer is a little sloppy.

These will keep the springs from "tilting and bending" which will throw off your bed level.

I made them 7.3mm tall which is a little smaller than the spring fully compressed so they won't interfere with the movement or compression of the spring as long as they fit LOOSELY.

both holes are also beveled though you won't really see this unless you print at high resolution.

Print Settings


Monoprice Maker Select i3v2






.2mm or better




infill is 100% but its small enough that I don't think infill settings will matter.


Make sure the spring is a clean loose fit. no wiggle but also no resistance. use a knife to clean the inside wall up as well. put the spring in and compress several times make sure no resistance. Your ready to go. going 104% might remove the need to clean up. just make sure you change both x and y equally and do NOT change z 7.3mm is the highest you can go without interfering with the ability of the spring to compress fully.

How I Designed This

I just went into tinkercad and started making cylinders (I imported my own custom cylinder from 3ds max to bypass the low polygon nature of parts made IN tinkercad.

I use a parabolic cone to make the bevels.

the hardest part was the calculations to place the parts relative to each other before cutting. there is no "center" option in tinkercad :-)

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Great little design, I really like how deep it is. Should keep my Monoprice Duplicator v2 bed springs staight. I printed mine in clear eSun PETG and they turned out excellent. I'll use four of these on the base plate and 4 shallower ones (like these http://www.thingiverse.com/thing:1778010) to mate to the heated bed.

Heat Bed Spring Insulated Washer

Excellent. Make sure the springs compress smoothly ie might need to clean up inside cups a tiny bit. Careful using cups on top as these are tall enough to completely accept a fully compressed spring (almost) for max support so a second set of any height will Iimit your travel range.