E3D Heatshield (silicone cover)

thingiverse

This protective shield safeguards your extruder from malfunctioning heaters and deflects heat radiation away from the cold zone, also helping to cool down the part being printed. I've purchased this high-quality silicone: http://www.ebay.com/itm/391144979833?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT To inject the silicone, I used an 18-gauge cannula measuring 1.2 x 40mm (available on eBay or at a pharmacy). You'll need these screws: * One M3 x 16 hex head * Eleven M3 x 12 hex head Print all parts in high resolution. You can either print the E3DCover_Core or E3DCover_Core_wCT model; I recommend the wCT version with a cooling tower as it significantly enhances cooling and produces a nicely printed tip. Activate the "Print islands sequentially" setting in your slicer for the wCT part. First, screw in the Spacer as seen in the CAD model, ensuring the screw is flush with the visible side of the spacer. Next, fill the bottom of the cavity with silicone (about 2mm will suffice). Insert the core into the cavity and secure it with the screw that holds the spacer. Then, fill the sides with silicone while being cautious of air bubbles, taking your time. Attach the lid part and fill the remaining form through the small outer holes (avoid the two central holes for air escape). Allow the silicone to cure for approximately 2 hours or more. Once cured, attempt to remove the Silicone part; be prepared to apply considerable force as it is highly flexible.