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thingiverse

This page collects essential items and principles required to upgrade a Railcore II to high-chamber temperature. The target chamber temperature is set at 135°C. The original Railcore II design can be accessed on: https://www.thingiverse.com/thing:2407174 Recommended online stores for high-temperature components include: * www.HighTemp3D.com - catering to EU citizens * www.Filastruder.com - serving US customers * www.mandalaroseworks.com - high-temperature Railcore products for US residents * www.713maker.com - high-temperature Railcore products for US citizens Completed upgrades and modifications include: 1. Creating a top lid for the enclosure, with an ABS frame and PC panels. The frame will be upgraded to PC as soon as the printer can handle it. 2. Installing a temporary chamber heater based on a PTC element, SSR, and temperature controller, made from ABS. This will be replaced by a 300x300 PTC bed heater. 3. Using a Mosquito Magnum with a high-temperature thermistor capable of measuring up to 450°C. 4. Installing Misumi Linear high-temperature rails, suitable for temperatures up to 150C. The product number is SSELBLT13-400, but SSELBLT13-395 can also be used. These rails are available at https://hightemp3d.com/collections/railcore-ii-zl/products/high-temperature-misumi-rails. 5. Insulating the inside of the enclosure with hard rockwool plates and using 20mm insulation to shield the side panels from heat. Rockwool with aluminum on one side was used. Upgrades and modifications still in progress include: 1. Replacing the ABS belt retainer with an aluminum belt retainer, which has already arrived. 2. Swapping standard Gates belts for high-temperature Gates belts suitable for 135C temperatures, available at https://www.filastruder.com/products/gates-2gt-belts-high-temperature-epdm?_pos=6&_sid=c61cff2a7&_ss=r. 3. Creating a thermal shield for the couplers. 4. Implementing a pressurized air cooling system for the hotend, which might not be necessary given the performance of the Mosquito Magnum. Instead, homemade fans will be installed in the cabinet to stir the air and cool the hotend sufficiently. 5. Replacing the extruder stepper with a high-temperature stepper, available at https://hightemp3d.com/collections/high-temperature-stuff/products/180-c-winding-high-temperature-ldo-pancake-stepper. 6. Swapping standard BMG with an all-metal BMG clone, which has arrived and appears to be of good quality. 7. Replacing all standard cables with silicone cables suitable for 150C temperatures. 8. Replacing ABS end stops brackets with PC end stop brackets as soon as they can be printed. 9. Swapping standard endstop switches with homemade switches made from printed parts and screws. 10. Creating a system to maintain low pressure in the chamber using a heat exchanger to protect the fans. 11. Installing an oil-based homemade pressure measurement system for monitoring air pressure in the Chamber.