The original bobbin holder by pitracer did not hold very well the larger spools of thread which had a larger hole. This design is thinner and has a larger separation at the ends. Printing in PETG works very well. PLA works but it has some memory and will deform to a smaller spool and won't hold in a larger spool. So far the PETG doesn't seem to have any memory.
Large_Bobbin_Holder.stl | 64.3KB |