1 (edited by s.ogorman 2017-01-11 11:49:47)

Topic: Da Vinci Jr: Printable Mods To Improve Performance & Reliabiltiy

Hey Guys,

I have printed a few mods to improve the performance of my Da Vinci Jr and I wanted to share them with you:


1st: Part Cooling - Fan air duct:
http://soliforum.com/i/?KZpy3tK.jpg

This helps to cool down the print and does improve the quality of the print, I have tried it printing with it on and off and it makes a difference for sure. XYZ actually designed the part and it is freely avaible from there site, I would recommend slicing it using Cura/ThreeDubber and printing on a slow speed with .1mm or less and at least 30% Infill (higher the better) and it will come out great. I printed it using the stock XYZ software when I first got the printer and I have had to sand it down to get it fitting nice and didn't print perfectly as you can see, it still does the job but I intend to reprint using Cura with finer detail.

Link to document:https://xyzprod.blob.core.windows.net/d … 100_US.pdf
I have attached the STL for the duct to the post to make it easier instead of looking on the XYZ site.

2nd: Filament filter and lubricator:
http://soliforum.com/i/?GaA6ocI.jpg
I got this from Thingiverse and so far it is stuck with some white tape to the filament entry ,I would like to make a printed part that fits tight around the filament entry but haven't had time, so if anyone wants to that would be great!
How to use add a few pieces of sponge and a few drops of mineral oil and screw together and poke the filament through, it will help to remove any dirt and dust on the filament and lubricate it and should help stop the clicking noise and allow faster more accurate prints.

Parts needed:
TFF_Female_Flat_v2.1
TFF_Male_1.75_v2.1 (Note print slowly, or drill the hole out to make the filament pass through -read the thingiverse description)

Link:http://www.thingiverse.com/thing:153807

Hope it helps someone, it has helped me so I thought I would share it!

Happy printing!!!

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2

Re: Da Vinci Jr: Printable Mods To Improve Performance & Reliabiltiy

Has anyone else printed the fan duct? If so how is it working for you?
Has it improved your print quality? I would be interested to know as I
want to improve the design of the fan duct and extend it to allow it to cool closer to the nozzle.

3

Re: Da Vinci Jr: Printable Mods To Improve Performance & Reliabiltiy

@s.ogorman
My issue with this part cooling solution is the way where it gets air. That fan is hotend cooling exhaust so air which comes out is not particularly cold. Also air intake for Jr printhead is mainly from the bottom 2x holes (+ some from the back gaps etc). So in theory with this solution it will be pumping the same air over and over again potentially heating up that air even more with every single pass... Ok that's just a theory based on the design, never tried to stick thermocouple in and take actual measurements if temperature claims up any higher than normal...

Have you checked this?! http://www.thingiverse.com/thing:1699598

4

Re: Da Vinci Jr: Printable Mods To Improve Performance & Reliabiltiy

kr15_uk wrote:

@s.ogorman
My issue with this part cooling solution is the way where it gets air. That fan is hotend cooling exhaust so air which comes out is not particularly cold. Also air intake for Jr printhead is mainly from the bottom 2x holes (+ some from the back gaps etc). So in theory with this solution it will be pumping the same air over and over again potentially heating up that air even more with every single pass... Ok that's just a theory based on the design, never tried to stick thermocouple in and take actual measurements if temperature claims up any higher than normal...

Have you checked this?! http://www.thingiverse.com/thing:1699598


Yea I did check your part cooling on thingiverse it looks great, however I didn't have any small fans to hand and decided to print this to see if it would improve anything.
It did greatly improve the quality of my prints at high speed and I don't get any stringy bits and great adhesion. I have printed some cookie cutters that have parts that are only 1 layer thick at high speed and 0.8 layer height using Cura and Threedubber, however with the stock setup and xyzware they come out horrible and a slow speed.