Here's my version of a lego lightsaber scaled up for human hands. There's a version that is hollow and has button holes that mtahc that of this cheap saber, https://www.amazon.com/gp/product/B09PD3B2YL/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1. All parts should fit, but you may need to sand the connections if they don't for you.
Be sure to post a make and check out my other models
If you like my work and would like to support it and future projects, you can buy me a Ko-Fi(though I am more of a tea person), https://ko-fi.com/reprops
The author marked this model as their own original creation. Imported from Thingiverse.