K1 Series Quick release magnetic tool head cover.

Note:- The rear portion that attaches to the printer is included ‘ONLY’ in this download set. If you decide to use one of my other alternate cover designs you will need the back plate from this Version. 

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This Mod when fitted, allows for instant removal of the front portion of the tool head cover, leaving the thin back portion (the rear frame) securely bolted to the printer.  It allows for instant access without needing to do all the messing about you normally need to do to access the hotend.

At the time of writing (May 25) the K1, K1C and K1 Max all use the same tool-head so this works with all 3 models.

• Note:- The complete assembly requires a total of Eight 6x3mm magnets. 

This print uses the air flow chamber feed from the OEM tool head cover (it unclips easily from the original cover). Fitting it to the newly printed part is a little more daunting as you need to flex the printed part a little to get it in place, but utilising the original vent removes the risk of potential deformation of a 3d printed vent  when printing high temperature filaments (something I found out the hard way). 

Fitting the rear frame portion is easy. If these two newly printed parts were glued together they would be near identical dimensions to the original cover. The only obvious difference being that with this version it is in two parts and thanks to the magnets you can quickly detach the front portion when required without needing to touch a single screw.

The rear printed frame when off the printer is a deliberately thin item but is more than strong enough when fitted to the printer. I added a small amount of extra width at the screw points over the original version, but keep in mind that it is ‘a printed part’ so don't go all muscle man when tightening the screws that hold it in place if you don't want to crush or split the print. 

I printed my first tests with 3 walls at 40 percent (gyroid infill) in PLA, but quickly switched to PETG as at the time of release that was the hottest filament I used to run. Despite working just fine, I later reprinted it in ASA for my permanent use version when I began printing in ASA. Long story short - If you decided to print this set up in PLA but then start printing a hotter PETG, ASA or ABS on a regular basis, then the PLA shroud could suffer for it. I'd advise printing petg if printing petg, asa for asa etc. 

Final note, although I have had no issues whatsoever with this design, my only potential concern being that of potentially over tightening the screws that hold the rear plate to the printer. At 40 percent infill it could easily be damaged by over tightening. If I was to reprint it again I would likely go up to at least 60 percent infill for the rear portion but would still keep the front at 40 percent and 3 walls for the front portion solely to allow some flex in the print for fitting the OE vent unit.