i have one speaker done and it looks wonderful.
I used a bit bigger bars these are 18mm long, and I had to cut them to size right there in the store. did try to trim them a bit but they ended with a bit of a difference. it’s okay for a diy project and it doesn’t look bad
I think I might had to print the files a little bit bigger, cause either my printer is out of spec or the wood is. I had some problems getting everything to fit.
I ended up using some wood glue and sanding a lot. at least that made it a nice solid part now.
will probably also at some wood oil to darken it a bit, cause this is a bit to much construction wood color (also need to finish the wall behind it)