Horizontal OpenLOCK ports print with small supports to support the overhangs in the port mouth. You need to remove these supports post-printing before you can insert the OpenLOCK clips.

We recommend using some needle-nosed pliers for this task. You can use the pliers to grip and twist the two supports in each port, breaking them and pulling them out in one fluid motion. This will often leave small nodules on the inside of the port. If these nodules are too large, you may want to go in with a hobby knife to trim them out. Be careful not to break the dividers between the OpenLOCK ports, as they provide pressure to make the clips hold.

With the supports removed, you are all ready to start assembling your epic dungeons.

I notice that remaining bumps of plastic and rough top sides of the openings makes it very difficult to insert the lock pieces. Is there a technique for removing the supports cleanly or for smoothing the ports?
Yes, I use a pair of long nose plyers, this pulls out the support without forcing apart the OpenLOCK port
Do I have to add aditional supports or I can use the file as it is.
You can print the file as iit is and remove the printing supports at the front of the ports afterwards.
My dividers keep breaking when I put them together/pull them apart 🙁
You might be having problems with your z-layer height and resolution or you’re twisting or clipping the supports out. IF you email [email protected] we can have a look at any issues.