E3D clone DC42 IR sensor and 40mm radial part cooler adapter by Nanocube

Last crawled date: 3 years, 1 month ago

Designed for a HE3D K280 delta printer; would doubtless work on K200 and many other Chinese deltas that use a E3D clone hotend having a square cold-sink block with 4x unused mounting holes on the reverse side to the fan (17mm apart). It leaves the grub-screws securing the heatbreak accessible.
A version without the fans is provided as a DC42 IR mount if you already have part cooling.. And a version without the IR42 mount to complete the set..
The DC42 IR board is protected from the heatblock by a backing plate, with allowance for the through-plated pins of the connector and capacitor. Some vertical adjustment is allowed for on the main mounting bracket so it can be lowered when using volcano hotends etc. On my rig I have the assembly pushed up as far as it goes, which clamps the LED light ring in place, and leaves the IR level offset at approx 1mm.
Fan version uses 40mm radial fans, NOT the 50mm ones that came with the K280!
Be Warned! it makes your effector wider than normal, make sure you still have clearance to belts and towers on your maximum travel (it is tight on my K280, but nothing touches)
40mm blowers are quiet and small enough to fit under the effector carriage configured for a 'big mouth' effect, blowing down on the whole print, but angled in on the nozzle.
I may return to this and separate the fan mounts into something that prints separately, and flat, which would allow me to add some simple ducting to make the air go more towards the nozzle for PLA work. Maybe even make a 50mm fan version.
Use a silicone sock on the hotend to ensure it does not get cooled too much by the fans as they come on, and to protect the IR probe.
Not the prettiest thing once printed due to small size and some nasty overhanging angles; even printing slow and small-layered it needed a bit of cleaning up (craft knife.. take care) and the fan holes reaming out.
SCAD file included; dont laugh.. it's ugly. My first attempt OK!