Zen 3d conversion, dual extruder

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Zen 3d conversion, dual extruder

Postby tshawkins » Wed Nov 05, 2014 9:32 pm

Just wanted to share my 3d conversion

Aluminium bed, dual heater pannels
dual extruder using j-head hotends, extruder is printed in ABS.
Jacked up Z column, gives extra 40mm height.
Strengthend X carriage and supports, using 2mm thick alu angle bracket.
RAMPS electronics.

The printer is a little on the slow side, but its accurate as hell, and can run for long periods, i have recently finished two 36 hour prints and its now doing a 56 hour one. Its nice and reliable, does not get too hot.

In the picture its printing the main chassis for another 3d printer (printrbot simple, printed version).

20141106_090202_scaled.jpg
3d 7x12 running as factory 3d printer.
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tshawkins
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Posts: 7
Joined: Sun Feb 17, 2013 8:31 am
Zen Model: Zen 0712 (Ext. Mod)
Other CNC Info: Self build electronics

Re: Zen 3d conversion, dual extruder

Postby bjmxr88 » Thu Nov 06, 2014 12:19 pm

Looks like a great setup!
Which panels are you using to heat that large aluminum heat bed?
Would love to see some finished print results!

Thanks for sharing,
B.J.
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Zen Model: None or Other

Re: Zen 3d conversion, dual extruder

Postby tshawkins » Tue Nov 11, 2014 8:06 am

bjmxr88 wrote:Looks like a great setup!
Which panels are you using to heat that large aluminum heat bed?
Would love to see some finished print results!

Thanks for sharing,
B.J.


Im using 2 mk11b pannels driven at 28v.

The pannels are screwed to the back of the plate, with several sheets of high absorbency paper soaked in sunflower oil. There is a insulating mat below tgat to stop heat escaping from the back of the bed. Each heatbed is connected to its own 28v psu (24v psu with its output wound up a little), and is connected via an automotive relay, so that the printer controller is not responsable for routing the current.

Im still setting it up, but i have been getting some great prints off it. Its as slow as hell, but very accurate and stable.

The best slicer i have found for use with it is KISSlicer, i have tried slic3r and CuraEngine, but they dont give anywhere near the quality i get from kiss.

Since i took this photo, i managed to burn out a hotend, when the thermistor became detached and the board drove it up to over 300 degrees. So i have removed one of the extruders while i wait for a replacement to arrive, that seems to again have improved quality. I was supprised as to how much of a difference that made, removing the weight of the extruder and motor. So my next project will probaly be a bowden conversion to cut the weight.

I will get some shots up of the output this weekend.
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tshawkins
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Posts: 7
Joined: Sun Feb 17, 2013 8:31 am
Zen Model: Zen 0712 (Ext. Mod)
Other CNC Info: Self build electronics


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