If you fight with your lightsaber, use a tsuba.
These tsubas have a 33.4 mm (basic) and a 33.8 mm opening, and fit perferctly for my TXQ Mando V2 and my TXQ Padawan E09 lightsabers. Depending you your hilt you might need to sand it a bit and/or use a tsuba dome and/or some plumbing O-rings (28mm diameter, 3mm thick) to hold it in place.
Print is with at least 3 perimetes and 20% infill (I found gyroid to work best), so it can take a beating. I did print in PETG but PLA should work as well. Whatever you use, do wear eye protection when duelling. Not only because of the 3d printed parts.
The author marked this model as their own original creation.