Original Bambu A1 Old Style Cable Protection Fix

OLD FILE only for original A1 printers that didn't replace the recalled cable

Here is an NEC and UL compliant fix (as to bend radius for multi conductor cables) for the A1 bed cable.  Apparently (via the platform formerly known as Twitter) the print your own fix provided by Bambu just moves the damage further out the cable.  

This design/fix was inspired by the solution we used in data centers to protect fiber optic cables.  You can print a single half or you can print both halves for 360 protection and to be a little stiffer if using TPU.  Either way there are 3 grooves to secure with simple cable ties at the machine side, in the middle to keep in place and the cable side (just need to be snug. don't damage your cable with something designed to keep it safe!)  

I hope this helps!  I know lots of people really didn't (or haven't) want to stop using the A1 while Bambu works on a fix.

I printed in both PETG and TPU (black is Elegoo Rapid PETG and white is Elegoo TPU) but waiting on my friend Uncle Jessy to print out and test on his A1 (I sadly don't have one…YET! ….see below lol)  I printed with (4) 0.6mm walls at 0.1 layer height (0.25 first layer) and 999 top layers with a textured PEI sheet on my Neptune 4 Max with a simple skirt. Printed in about 20min.

To install simply slide onto the larger rubber strain relief already on the printer (larger cylinder) with one half (or only half if you only printed one) and guide cable through the channel. Then either tie wrap in place or place the other half to fully enclose and protect the cable and then tie wrap together.  Again just snug will be fine.  I designed it to be oriented up but you can rotate either right or left as needed to provide clearance and however it puts the least strain on the cable.  I also added some room for it to move against the printer and at the end of the guide so it puts as little pressure on the cable as possible.  If printed in TPU you can really do anything. By design it won't let anything kink without you seriously wanting it to.

Any feedback is most appreciated. It is designed to be a pretty snug fit on the existing rubber ring and the cable so it gets the best grab onto both.  Don't be surprised if using both halves the you have the smallest of gaps between the halves.  This is by design again to help grip the cable without any stress points.

Sorry for this so long but I always appreciate more info vs less.  Happy 3D printing!

https://buymeacoffee.com/psycho3d if you found this useful!

PS. @Bambulabglobal if you're listening, I'm happy to help in the future.  This was a simple fix for any engineer and should be easy to modify and injection mold for your future printers (honestly is a 50yr old design that would have worked just fine. I just don't have an overmolding injection machine.)  I'm sure we can work a trade (heck, send me a returned A1 with AMS and I'll prove this design works by testing 24/7 til i run out of filament or die in a fire lol.)  I help lots of companies fix problems like this every day (and more importantly fix problems before they become public issues!) and I'm always down to help make things better so more everyday folks can enjoy this great hobby. I'm a huge fan of what you're doing (well most things!)