HE280 Hotend Whip Retention Clip for Rostock Max V3

by TimStough, published

HE280 Hotend Whip Retention Clip for Rostock Max V3 by TimStough Mar 21, 2017

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1070Views 235Downloads Found in 3D Printer Parts


UPDATE 2018-02-01: I got tired of clipping and reinstalling zip ties, so I designed two different locking parts. The TPU one is for when you're using an HE280 with the fan shrouds above it. TPU is flexible enough for you to scoot it around the fan shrouds and on to the clip. The other on is for effectors that do not have the high fan shrouds. You can print that one out of PLA or whatever. Either one just slips over the clip once connected and prevents it from coming loose.

UPDATE 2017-05-08: So, has anyone else made one? There have been like 30 downloads and I'm curious how it's working for you. If you print this and use it, please leave a comment. :) Thanks!

If you have an HE280 hot end on your Rostock, you may have noticed that the wire whip plug does not have any retention mechanism. On two occasions I had the hotend get disconnected from the printer. Once it resulted in a thermal runaway due to the fact that the heater stayed connected while the thermister was disconnected. On the other occasion, the plug came loose during a z-probe resulting in the hotend being driven into the bed until I hit the red button.

These incidents lead me to consider methods to prevent it. This replacement cover and retention clip for your HE280 will allow you to ensure that your hotend stays plugged in.

I have printed and tested both of these objects on my printer and they perform as designed. The heat shrink on the wire whip does impede the clip slightly, so you have to squeeze the clip to get it to engage. Although I think that the clip works adequately, I have added a zip tie around the clip as a failsafe.

The HE280 is stock on the Rostock Max V3 and can be added to any Rostock Max as an upgrade.

UPDATE: I realized that I uploaded an old cover file without enough clearance to insert the clip. v2 fixes this, but if you already printed it, no fear, you can modify it with a razor blade or file. I'm actually running v1 on my printer with no issues.

Print Settings

Printer Brand:








0.5mm nozzle; 0.2mm layer height


Doesn't Matter


I printed the cover with PLA using support everywhere. The retention clip, I printed with no support in PETG for greater flexibility, but maybe PLA would have been stiffer and hold the whip better. On my printer, I used a zip tie (or one of the newly uploaded locks) around the retention clip to ensure that it doesn't slip.

How I Designed This

Thanks to SeeMeCNC providing models of all of the Rostock parts, I started with the HE280 cover and cut out the space for the clip and then designed a clip to fit into the space.

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Nice job on this. Solved a bunch of def problems I was having!

The locks have been uploaded. Enjoy!

Thanks so much for the comment! I haven't added it yet, but, I have a piece that you can print to lock the clip instead of wasting a zip-tie every time you swap hot ends (I have 3 different hot ends that all use the HE280 board and this cover).


Printed the clip and cover in PLA. Fitted it to the HE280 and realized I did not account for shrinkage - whoops. What can I say, other than "I'm a noob?" Said to heck with it, secured the cover down as best I could ... it fits (albeit a little too tightly) and now I have much less of a concern about the whip popping out of the connector. Seems like an excellent idea for a Thing!

Thank you for creating and posting this safety device - an ounce of prevention is worth more than a pound of cure!

Well, I just made a retention clip and installed it! I'm using a cover printed from DJKirkendall and had to X-acto it to make it fit. I just managed to slip it on the whip, but I'm afraid it will slip off, it doesn't feel like it has the best grip. Maybe if there was reinforcement between the two clips to pull them closer together... edit*just saw your note about the zip tie, good idea.

I was having issues too...the thermistor connection was weak, signalling that the HE was much cooler than it actually was. If it went on for too long, the temps would go def. For a long time I thought it was my PID giving me problems, but the occurrence would happen sporadically. Thank you TimStough! I'll let you know how it works out!

Glad that it worked out for you. The connection between the two clips is a good idea, but I'm glad the zip tie worked out for you!

It's pretty awesome that SeeMeCNC puts all of the printer parts up so that mods like this are relatively easy.