Spool holder for 3up printer

I was having issues with the first spool holder I tried for my printer; it was one of those holders where the spool would sit on rollers. After several occurrences of the spool getting pulled out of the holder and falling onto the printer bed, I decided to create what you see here. This was designed for a 3up printer, but the supports will slide onto any printer with 20mm x 20mm extrusions for its frame. Print off two supports, purchase a 1/2" wooden dowel and trim to size, then install. I haven't had any issues since. The height of the supports are about 183mm.