Soldering Iron Press for Threaded Inserts

This is model of soldering iron press for threaded inserts. For this stand I used an old 2 pc 8x370mm rods from my printer( rods have groves so were useless in 3d printer) and 2x LMU08 bearings. Parts were printed in Bambu Lab PET-G Basic Blue filament. Threads M4 in base and end cap was tapped in the material. In slider I used a M4 threaded inserts. Tap is to long to make the thread inside this hole.  Used items: 8x370mm steel rods from printer-2pc LMU08 berings -2pc Tension spring 30mm long- 2pc Fasteners used: Screws: M3x25mm Socket Head Screw- 2pc M4x8mm Socket Head Screw- 6pc M4x25mm Socket Head Screw- 2pc Nuts:M3 Nylock Nut- 2pc M4 Nylock Nut- 5pc Washers:M3 washer- 4pc M4 washer- 8pcInserts: M4x8mm threaded insterts- 2pc Material:PLA, PET-G, ABS, etc. Layer High:0,3 or lower ( 0,2 will be good) Support needed under rib in slider.