QIDI Plus4 - Screen Cable Plug for Early Production Series

Recently I came by the QIDI Plus 4 Screen Wire Plug from user Максим Батурин that helps prevent local overheating of the screen due to hot air escaping the heated print chamber through the large opening in the front to route the screen cable through. What a good idea, I thought, printed it and tried to mount it, but then had to realize that his version didnt fit my Plus4 at all.

Since he uploaded his version in the middle of 2025 and I had bought my Plus4 at the end of 2024 quite soon after its release, the conclusion was obvious: Qidi must have changed the screen mount design a little bit, as I also remembered that routing the cable correctly whilst simultaneously mounting the screen had been lets say not as much of a joy than the rest of the printer set up. A closer comparison between the pictures he provided and how the mounting area of my Plus4 looked proved my assumption. Please repeat the comparison yourself with the provided photos, as it will determine which version fits your Plus4.

My task now was straight foreward: Design a cable plug that fits the early series of this printer, provides the functionality of a heat shield and also helps routing the cable during the mounting of the screen by deviding this task into two steps. So, for all of the ones, who ordered their Plus4s early, here is the version for you.

HOW TO PRINT: There is not much to say. I wrote the orientation right on the top of the part (the top face during the printing will be facing inwards once mounted). 

• A layer height of 0.2mm is good. 
• 5 solid layers for both bottom and top together with
• a 30% cubic infill and
• 3 perimeters for the walls works well.
• PLA will most probably be fine, but for prolonged printing sessions with a heated chamber you might want to choose a slightly higher temperature material like ABS, of which the silver outer casing is also made of.

HOW TO MOUNT: Mounting can need some force (but not as much as would damage your printer!), as the plug is designed to fit the hole quite tightly. Look at the provided pictures for the procedure:

1. Route the cable through the hole in the top of the plug (it can be pushed/pulled through later for length correction.
2. With your left hand push the top of the plug together with the cable in the top of the hole at a vertical angle and a bit sideways to the left so that the inner latch on its right side can slip in.
3. Then (still with your left hand) swivel the bottom of the plug into the hole by pressing it down with your thumb and at the same time push it slightly to the right to slide the inner latch on its right side behind the casing, whilst the outer latch on its left side will prevent you from pushing it in too far. In case you need to press hard, use your right hand to support the casing from the inside to prevent it from bending, snapping or even cracking.
4. The plug will pop in place making a click sound.

In case the plug wont snap in, even though you pressed hard and of course made sure that your printer and this plug shape are of compatible versions, then have a closer look to check and if needed correct with a sharp knife the shape of the plug in case it turnes out that it was printed too large or inaccurately. 

HOW TO UNMOUNT:  Look at the provided picture for the procedure:

1. Shove a plastic scraper (not a metallic one!) from the left under the outer latch of the plug with your left hand but take care not to scrape off the silver paint from the printer casing.
2. Rotate the scraper upwards, so that the lower side of the plug is lifted first.
3. The plug will pop out with less force than needed for mounting it in. In case it doesnt come out easily, push it from within the enclosure outwards with your right hand whilst turning the scraper with your left.

WHAT TO UNDERSTAND: You modify your printer at your own risk. Dont blame any person other than yourself if things go wrong.