3D Delta Printer Magnetic Effector and 40mm fan duct to suit Rostock / Kossel style printer with adapter for E3D hot end

thingiverse

This is a custom 3D delta printer magnetic end effector I have desinged to suit my custom aluminium hotend designed for 1.75mm filament. Follow the build progress on my blog http://d3delta3d.blogspot.com.au/ and a video of it in action http://youtu.be/_RzzDTeKAJ0 The efector uses 10mm diameter N42 magnetic balls that are JB glued to the 6 recesses in the top of the end effector. The centre distances of the magnetic balls are 60mm. Regular steel balls could be used and have magnets in the rods, I just opted for the other way around. Also included is an adapter for the E3D hotend for those who are not using a custom machined one. The adapter will print as a two piece part that will attach to the effector with 5 x 4mm cap screws and nuts The printer design is based on the Rostock max to make use of a bigger build space. The hotend passes through the top of the effector and is secured with 5 x 4mm cap screws and nuts to ensure that it is nice and rigid. The fan duct is then bolted to the underside of the efector plate with 2 x 4mm cap screws. There is a slight clearance between the fan duct and hot end heat sink fins to eliminate any vibration can occur when the 2 touch. The centre of gravity is 7mm below underside of the efector so is quite well balanced for faster print speeds Weight wise the complete unit comes in at around 140 grams. Instructions The M4 nuts will press into the recesses. You can either use 4mm screws to secure the 40mm fan or tap teh holes with an M4 tap and secure with cap screws. This is the way I did it