Don't skimp on wiring! / Taz 5 + duet + rebuild

A forum dedicated to the stock LulzBot TAZ 3D Printer
pepperoni
Posts: 83
Joined: Sat Aug 08, 2015 11:56 pm

Don't skimp on wiring! / Taz 5 + duet + rebuild

Post by pepperoni » Sun May 20, 2018 6:25 pm

My Taz has been good to me for the past 3-4 years. However, I randomly discovered that the bed connector was a bit charred and that could have made for a bad day. I wanted to give the printer an overhaul, which included replacing the Rambo with a Duet. I had a lapse in judgement when I decided to extend the bed wiring with 16awg. Started to smell after I fired up the printer but at least it didn't quite smoke. Ended up bypassing the Amp connector and ran PowerPole connectors straight to the Duet and crimping a new pigtail for the sensor.
Attachments
2018-05-20 16.29.37.jpg
2018-05-20 16.13.02.jpg
2018-05-20 16.49.32.jpg
Last edited by pepperoni on Mon May 28, 2018 11:33 pm, edited 1 time in total.

kmanley57
Posts: 1111
Joined: Sun Feb 01, 2015 3:53 pm

Re: Don't skimp on wiring!

Post by kmanley57 » Mon May 21, 2018 6:18 am

Well a couple years ago I ran the 16 Gauge bed wires straight through the AMP connectors to the Bed plate connector, Have not had an issue since, but not everyone has the AMP connector pin removal tool like I did.
I will express my CRAZY ideas at any time! So you have been warned. None of my opinions are Lulzbots and can be wrong at any second.

pepperoni
Posts: 83
Joined: Sat Aug 08, 2015 11:56 pm

Re: Don't skimp on wiring!

Post by pepperoni » Mon May 21, 2018 3:05 pm

Do you mind posting a shot of what your amp removal tool looks like? I have the one from Molex to remove circular Molex pins and while it fits the pin perfectly, I'm unable to fit it between the pin and the connector housing. I'm referring to the female pins. Perhaps I'm not even removing it right.

This is what my Molex tool looks like.
2018-05-21 14.07.02.jpg

kmanley57
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Re: Don't skimp on wiring!

Post by kmanley57 » Tue May 22, 2018 9:04 pm

Looks like this Amazon LInk
I will express my CRAZY ideas at any time! So you have been warned. None of my opinions are Lulzbots and can be wrong at any second.

pepperoni
Posts: 83
Joined: Sat Aug 08, 2015 11:56 pm

Re: Don't skimp on wiring!

Post by pepperoni » Tue May 22, 2018 10:16 pm

kmanley57 wrote:
Tue May 22, 2018 9:04 pm
Looks like this Amazon LInk
Oh I've seen that before but it looks remarkably similar to what I have. Will it extract female pins as well?

kmanley57
Posts: 1111
Joined: Sun Feb 01, 2015 3:53 pm

Re: Don't skimp on wiring!

Post by kmanley57 » Wed May 23, 2018 5:15 am

Yours will release the locking tabs but requires you to pull the pin out, while the other has a plunger that helps press it out. Both work to release the tabs the same, one just makes it easier to remove the pin if the wire comes out of the crimp.
I will express my CRAZY ideas at any time! So you have been warned. None of my opinions are Lulzbots and can be wrong at any second.

silent_ninja1
Posts: 42
Joined: Tue Aug 15, 2017 7:12 am

Re: Don't skimp on wiring!

Post by silent_ninja1 » Wed May 23, 2018 4:50 pm

Not all wire types are created equal! Different flex ratings and ampacity for say THHN vs MTW vs UF, Aluminum vs Copper. Check what you use :)

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piercet
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Re: Don't skimp on wiring!

Post by piercet » Fri May 25, 2018 1:07 pm

Part of the problem with that bed connector specifically is it isn't rated for the full theoretical amp draw of the bed connection. So it can melt.

pepperoni
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Re: Don't skimp on wiring!

Post by pepperoni » Sun May 27, 2018 3:24 am

piercet wrote:
Fri May 25, 2018 1:07 pm
Part of the problem with that bed connector specifically is it isn't rated for the full theoretical amp draw of the bed connection. So it can melt.
Going straight from Duet to Anderson PowerPoles now. While I have the printer apart, I'm re-printing all your openbuild mods, and every stock Taz part in CF Nylon :)

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piercet
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Re: Don't skimp on wiring!

Post by piercet » Sun May 27, 2018 5:33 pm

Nice! That will be rediculoudly sturdy!

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