Prusament to master spool adapter

myminifactory

This adapter enables you to convert an empty prusament plastic spool into a master spool. The concept of the master spool is appealing, but printing it can be time-consuming, taking over 6 hours for part B and 12+ hours for part A. I discovered that prusament spools could be reused as master spools with a simple adapter, which sparked this design. After iterating through several designs, I came up with a 3-part design consisting of an adapter core (large cylinder), screw, and nut, where the core is required, and the screw and nut are optional. This setup makes it a faster and more affordable solution compared to printing the master spool. It also helps reuse plastic parts that might otherwise be discarded. Prusament spools feature a cardboard core, which can even be reused to create something creative. This adapter works seamlessly with prusament spools and dasfilament refill filament. The core fits snugly, but it's essential to assemble slowly to achieve a compact and sturdy spool. The plastic bag and silica gel that come with the prusament are also reusable for storage later. To assemble this adapter: First, disassemble the prusament spool by gently pulling apart the two plastic halves. This should leave you with two identical plastic sides (apart from the laser-engraved label) and a cardboard core. Option A: You've printed just the core Place one half of the prusament spool on the table, followed by the core, ensuring it aligns with the inner lines of the spool. Next, slide your refill filament onto the core, making sure the three zip ties are aligned with the three slots on the adapter core. Finally, place the second half of the prusament spool on top and secure it using long zipties through the hex holes below the core line. Option B: You've printed the core, screw, and nut Begin by attaching the screw to the prusament spool's center, then slide one half of the spool onto the screw. Next, place the core onto the spool half, ensuring it matches the inner lines of the prusament spool. Slide your refill filament onto the core, taking care that the three zip ties are aligned with the core's three slots. Finally, attach the second half of the prusament spool and secure it using the nut. To print this adapter: The fastest method (tested): Print the adapter core with 2 perimeters, 3 top/bottom layers, 0% infill, and 100% infill at the middle part. This should take approximately 3 hours to complete. Print the screw and nut with 2 perimeters, 3 top/bottom layers, and 20% rectilinear infill. This should also take around 3 hours to print. If you want to print all three components together, they fit on an Mk* plate and can be completed in approximately 6 hours using the above settings. Alternative method: Print with 2-3 perimeters, 2-5 top/bottom layers, and up to 20% infill. You don't need any supports or brims. The screw prints head down, while the core is printed upright (flat part facing down), and the nut is printed horizontally. I used .2mm layers, but larger layers should also work. PETG is recommended for its strength and durability, but PLA can also be used (I printed mine in PLA).