Magnetic Halogen bulb holder and cooling fan holder for Zillagrip Cold Bed Printing using E3D Volcano hotend

thingiverse

This is a halogen mr11 ceramic socket holder that can be directed to heat the model as you are printing. This is necessary for larger prints using Zillagrip Cold Bed Coating by Zilla3d.com. Zillagrip cold bed coating allows you to print a variety of plastics including Nylon, ABS, Delrin, Polycarbonate and even Polypropylene on a cold bed. You just heat the bed to up to 90 degrees to remove the model. It saves a lot of power on larger 3d printers and eliminates the biggest problem with power outages---that your model releases from the bed. Only a much smaller UPS is needed for power interruptions. On prints that are large, or higher than 12mm - 20mm, and using a warping filament like ABS, Nylon or Polypropylene, the high infrared wavelength of the halogen bulbs is absorbed by the model so that the model is kept relatively warm. It accomplishes the same purpose as a warm enclosure. Our experiments showed that this is very effective in reducing warping and delamination. In fact, NASA uses this method in their experiments. Try to arrange your model so that it has the least surface area on the bed and you are printing more in the Z space. It is counterintuitive but works better since the contact area for the nozzle is smaller and keeps warmer. See video printing Polycarbonate using zillagrip cold bed glue and other videos with other plastics: https://youtu.be/Ipm5hffnB_M This shroud fits easily on E3d heat sink and accommodated the regular 3mm heatsink cooling fan and two mr11 halogen bulb holders. And they can be removed and replaced interchangeably with a cooling fan for your model when printing a non-shrinking plastic like PLA or PETG or TPU cold with Zillagrip Cold Bed Glue. You should have a connector on this to change them and then you control the halogens with your cooling fan commands in your slicer. You can turn on the halogens at the second layer or above depending on the need. First layer should be off. Also remixed from https://www.thingiverse.com/thing:3013756 with binder clip holders We recommend a 20w bulb pointing to positive Y and another to negative Y on moving beds, +X and -X usually works on stationary beds. Make sure it doesn't hit anything in your printer within the printing volume. If you connect to your part fan circuit, you can change the lights intensity or turn them on for layers higher than 10mm for example. We use 3 on the Deltazilla Large Format 3d Printer. Add a dab of silicone between bulb and socket so it doesn't vibrate out. Other bulb holders are at https://www.thingiverse.com/thing:3013756 HALOGEN LIGHTS GET VERY HOT. THEY CAN START FIRES! BE VERY CAREFUL AND MAKE SURE THERE IS NO POSSIBLE CONTACT WITH FLAMMABLE PLASTIC. You can purchase Zillagrip Cold Bed Glue and the associated sockets and bulbs at www.zilla3d.com. We use fire-retardent resin in our socket-holders. These were printed in clear petg and work fine. Magnets are 3mmHx6mmD but not completely necessary to hold on the parts but a good safety measure since they latch on top and gravity keeps them on.