Heatbed heater cable getting stuck with the MINI Z Bottom case/cover when the printer moves the bed till the end, causing damage to the cable protector...
 
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Heatbed heater cable getting stuck with the MINI Z Bottom case/cover when the printer moves the bed till the end, causing damage to the cable protector...  

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rbid
 rbid
(@rbid)
Active Member
Heatbed heater cable getting stuck with the MINI Z Bottom case/cover when the printer moves the bed till the end, causing damage to the cable protector...

Hello,

After a few weeks of printing, I noticed that the cable protector for the headbed heater cable started to get damaged, which puzzled me, because the printer is not next to a wall or any other place, so I watched the printer do its work on a small object and see what goes on, and I discovered that when the bed moves till the end, the cable gets around the MINI Z Bottom case, so when the head moves, the cable gets caught by the sharp edges of the case. (See the pics below)

Here is the damage example:

I strongly suggest to make the case border round, so the cable can slip without getting caught by the sharp corner.

Did somebody else go this problem?

Any suggestions what to do? (other than printing a new MINI Z BOTTOM box?

Greetings from the Galilee..

--- Ricky Marek.

Posted : 09/06/2022 12:29 pm
mark
 mark
(@mark-3)
Reputable Member
RE:
Posted by: @rbid

Hello,

After a few weeks of printing, I noticed that the cable protector for the headbed heater cable started to get damaged, which puzzled me, because the printer is not next to a wall or any other place, so I watched the printer do its work on a small object and see what goes on, and I discovered that when the bed moves till the end, the cable gets around the MINI Z Bottom case, so when the head moves, the cable gets caught by the sharp edges of the case. (See the pics below)

 

Here is the damage example:

 

I strongly suggest to make the case border round, so the cable can slip without getting caught by the sharp corner.

Did somebody else go this problem?

Any suggestions what to do? (other than printing a new MINI Z BOTTOM box?

Greetings from the Galilee..

--- Ricky Marek.

Bend the wire bundle up so it is above the case cover. Mine is higher and does not catch on anything. My Mini is an early model and the cables and protector are fairly stiff, and can be bent upwards and will stay there.

Regards,

Mark

This post was modified 2 months ago by mark
Posted : 09/06/2022 2:16 pm
mrstoned
(@mrstoned)
Reputable Member
RE: Heatbed heater cable getting stuck with the MINI Z Bottom case/cover when the printer moves the bed till the end, causing damage to the cable protector...

I had a similar issue in the beginning.

I did runt it for a good while with just a rubberband  up to the extruder so it wouldnt droop down.

I eventually made a dragchain, https://www.printables.com/model/115419-prusa-mini-horizontal-dragchain-for-heatbed ,that only requires one small cut to original lid on the electronic box.

Everything else is attached with zipties and a replaced part on the heatbed connector.

I printed the chain in PLA, and the heatbed connector in PETG. Now after about 6-700 hours of printing the PLA-chain sqwueeks abit when moving but nothing too bad.

Tevo Nereus.
Prusa Mini+ kit (4.3.4). BondTech extruder.

Posted : 09/06/2022 4:05 pm
fuchsr
(@fuchsr)
Famed Member
RE: Heatbed heater cable getting stuck with the MINI Z Bottom case/cover when the printer moves the bed till the end, causing damage to the cable protector...

Shouldn't be a problem if the cable is bent coming out of the box to go up and between the two ridges on the box.

Also, take a look at https://www.printables.com/model/72989. Makes for much cleaner cable management and routing.

Posted : 09/06/2022 5:23 pm
Pneumatic
(@pneumatic)
Active Member
RE: Heatbed heater cable getting stuck with the MINI Z Bottom case/cover when the printer moves the bed till the end, causing damage to the cable protector...

Thanks for the tip, this looks very handy. Your link got mangled by the period at the end of the sentence.  Here is the correct link to the z-box.

Posted : 11/06/2022 9:07 pm
Bazim
(@bazim)
Eminent Member
RE: Heatbed heater cable getting stuck with the MINI Z Bottom case/cover when the printer moves the bed till the end, causing damage to the cable protector...

I had exactly the same problem. Fixed it with this https://www.printables.com/cs/model/72989 like fuchsr said. 

Posted : 11/06/2022 10:06 pm
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