How to 3D print transparency?

1. Print settings

The print setup is key as we build the next steps on it.

• use of transparent material
• higher temperature: a higher temperature is generally recommended (about 10 - 15°C)
• large nozzle (at least 0,6 mm)
• high layer (0,3 - 0,5 mm)
• multiply extrusion (108%)
• thin and full walls
• without cooling
• slower printing (70 - 75% of normal speed)

2. post-process

It is necessary to unite the layers without the use of sealants, etc.

• initial grinding (roughness P60 - 220)
• improvement (thickness P500 - P2000)
• varnishing (the use of transparent varnish achieves further unification of the layers)

• chemical reaction (you can try a chemical reaction for some materials) e.g. paint ABS with acetone, spray PETG with dichloromethane
• paint the printed parts with transparent resin

Resin has an advantage, as it is printed with a standard 0,05 mm layer.

• each resin has specific settings that the manufacturer states 
• the best choice is PMMA resin

2. hardening of the resin

The resin must be washed and left to harden

• wash with isopropyl alcohol
• cure with UV light

2. post-process

Since the layer is really small, the post-process is much simpler

• initial grinding (roughness P60 - 220)
• improvement (roughness P500 - P2000)
• varnishing (the use of transparent varnish achieves further unification of the layers)