1

Topic: Workbench stock hotends leaking

I have a Solidoodle Workbench, and I am pretty new to this.

I am printing with PLA at 190 degrees

I have noticed plastic dripping from the top of both nozzles. I'm not talking about the dripping that normally happens from the opening of the nozzle. The dripping is ruining my prints, causing jams and other problems.

From what I can tell, its coming from a hole drilled into the heating element.  The heater block came that way from the factory. My best guess is the nozzle isn't seated properly against bevel on the the threaded barrel, and the plastic is leaking up the threads until it comes out the hoels in the heater block.

You can see in the attached picture the holes that the plastic is leaking from.  I think that if the threads are filled with plastic, that disassembling the head is going to be difficult. So far, I have heated the head up to 200 with no filament in it, hoping the plastic will drip out.

I found this nice video that shows how to tear down the head and rebuild it. https://youtu.be/SfACwC9diQY

What should I do?

Solidoodle Workbench.
Game Designer
Custom LED Lighting specialist.
Artist.

2

Re: Workbench stock hotends leaking

Let's figure a way to fix them or replace them with something better.

note: no picture in your last post

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

3

Re: Workbench stock hotends leaking

http://soliforum.com/i/?nGAZr6H.jpg
I hope this picture uploaded. 

I am OK with replacing them.  I'm fairly handy with tools.

Solidoodle Workbench.
Game Designer
Custom LED Lighting specialist.
Artist.

4

Re: Workbench stock hotends leaking

That just looks like a hole for a set screw. Just measure and get the right size then put it while it's how to make a good aseal and it should stop your drips..

Printing since 2009 and still love it!
Anycubic 4MAX best $225 ever invested.
Voxelabs Proxima SLA. 6 inch 2k Mono LCD.
Anycubic Predator, massive Delta machine. 450 x 370 print envelope.

5

Re: Workbench stock hotends leaking

Maybe you could get by with plugging them but that doesn't seem right.  I'll get a chance tomorrow to get a closer look at mine.  Im sure we can come up with a better solution.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

6

Re: Workbench stock hotends leaking

Wardjr, I agree.  It seems to me if the extruder is working correctly, the only place plastic can come out is the end of the nozzle.  It shouldn't be able to leak up this high, even if the hole is there.  If plastic is getting to the hole, it means that it can build up inside the head and contaminate other colors when I swap filament.   The link to the video I posted in the OP shows the same hole in the heater block, so I suspect you will find it on yours as well.  I had to remove some insulating tape from my head to see what was going on.  Even in the Solidoodle instructional videos, that tape is not there, so I'm guessing its not really needed.

Solidoodle Workbench.
Game Designer
Custom LED Lighting specialist.
Artist.

7

Re: Workbench stock hotends leaking

I have decided to upgrade my hot ends with E3D V6.  I will be using this mount

http://www.thingiverse.com/thing:805681

Which model of the E3D V6 should I buy?

Where is a good place to buy it. I see prices all over the place from $20 to $80
https://www.google.com/search?q=e3d+v6+ … p;tbm=shop

Solidoodle Workbench.
Game Designer
Custom LED Lighting specialist.
Artist.

8

Re: Workbench stock hotends leaking

Order from Filastruder. Most of the ones you find on Amazon are inferior clones and are known to cause more problems than they fix

Printit Mason and Printit Horizon printers
Multiple SD2s- Bulldog XL, E3D v5/v6/Lite6, Volcano, Hobb Goblin, Titan, .9 motor, Lawsy carriages, direct Y drive, fishing line...the list goes on
Filawinder and Filastruder #1870.....worth every penny!

9

Re: Workbench stock hotends leaking

Agree with AZERATE - definitely order from an authorized dealer - do NOT buy on Amazon, or eBay.

Filastruder is one of those authorized dealers and you can rest assured you are getting the real deal, and elmoret is a good guy to deal with. smile

SD4 #1 & #2 - Lawsy carriages, E3D v6, Rumba controller board, mirror bed plate, X motor fan, upgraded PSU & Mica bed heater
SD4 #3 - in the works ~ Folgertech FT-5, rev 1
Printit Industries Beta Tester - Horizon H1

10

Re: Workbench stock hotends leaking

Do I need the 12V 1.75MM Universal without the Bowden extras for this Thingaverse mounting?

http://www.thingiverse.com/thing:805681

Thanks,
Chuck

Solidoodle Workbench.
Game Designer
Custom LED Lighting specialist.
Artist.

11

Re: Workbench stock hotends leaking

I got my new E3D hot ends. It's fiddly work assembling them.  How should I connect the wiring?

Solidoodle Workbench.
Game Designer
Custom LED Lighting specialist.
Artist.

12

Re: Workbench stock hotends leaking

Is your question, how to make the physical connection of the wires?  Or are you asking what goes where?

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

13

Re: Workbench stock hotends leaking

I'm pretty good with a soldering iron, and the kit comes with crimp connectors.  I guess my question is , Is it recommended to solder the new hardware into the harness, or use detachable connectors, and if so, what is recommended.  The instructions I am using for assembly are here: http://wiki.e3d-online.com/wiki/E3D-v6_Assembly

Solidoodle Workbench.
Game Designer
Custom LED Lighting specialist.
Artist.

14

Re: Workbench stock hotends leaking

You really want to follow the instructions and use the crimp connectors as shown...the connection is still considered to be rather close to the hot end, and remember that solder melts at around 210C...Some also maintain you stand a chance of altering the resistance to the thermistor circuit, and since a thermistor works by changing its resistance based on the surrounding temperature, well...you're better off with the crimp tubes. 

Once all the wiring is complete and you wish to insert plug-in connectors, then do it farther up the line.  The wiring directly around the finished and mounted hot end should be secured with zip ties to limit movement of the connections.

SD2 - Stock - Enclosure - Heated Bed - Glass Plate - Auto Fire Extinguisher
Ord Bot Hadron - RAMPS 1.4 - Bulldog XL - E3D v6 - 10" x 10" PCB Heated Build w/SSR - Glass Plate
Thanks for All of Your Help!

15

Re: Workbench stock hotends leaking

Soldering is not necessary to assemble the E3D unless you are cannibalizing your old plug for the heater.
Some boards vary...some use screw terminals and others require plugs. But if you are using a Workbench with a stock board, which would be a Printrboard, you will want to cut the old wires a few inches away from the plug, slip on some heatshrink, then solder the wires and seal with the shrink.

There is no polarity for the heater or thermistor.

Printit Mason and Printit Horizon printers
Multiple SD2s- Bulldog XL, E3D v5/v6/Lite6, Volcano, Hobb Goblin, Titan, .9 motor, Lawsy carriages, direct Y drive, fishing line...the list goes on
Filawinder and Filastruder #1870.....worth every penny!

16

Re: Workbench stock hotends leaking

Azerate,
I do have a workbench.
So you mean use as much of the wire in the existing harness as I can, and attach the E3D to it directly. Don't use the red and black wire supplied, and hook the thermistor directly to the wiring harness?

Once again, thanks to the people posting for your help.

Solidoodle Workbench.
Game Designer
Custom LED Lighting specialist.
Artist.

17

Re: Workbench stock hotends leaking

For the heat cartridge wires run the new wires as long as you can.  If they are long enough to reach the board you can cut the originals a couple inches from the board.  This allows you to reuse the existing plug and keeps the splice away from motion.  For the thermistor you'll need to reuse most of the original wires and use ferrules to crimp to the new thermistor.  As always, proper strain relief is crucial to prevent your crimp or splice from breaking due to excess motion.

Printit Industries Model 8.10 fully enclosed CoreXY, Chamber heat
3-SD3's & a Workbench all fully enclosed, RH-Slic3r Win7pro, E3D V6, Volcano & Cyclops Hot End
SSR/500W AC Heated Glass Bed, Linear bearings on SS rods. Direct Drive Y-axis, BulldogXL
Thanks to all for your contributions

18

Re: Workbench stock hotends leaking

After pulling back the webbing around the cables, I see disconnect connectors.  I'm going to target those for my cable extensions.  That makes the thermistor connector easy, because the supplied connector matches the Solidoodle connector, That leaves on the heater cables to sort out.  I will probably solder splice to the existing wires so I can keep the connectors.  I will have to get some heat shrink tubing.

Solidoodle Workbench.
Game Designer
Custom LED Lighting specialist.
Artist.

19

Re: Workbench stock hotends leaking

chucks wrote:

After pulling back the webbing around the cables, I see disconnect connectors.  I'm going to target those for my cable extensions.  That makes the thermistor connector easy, because the supplied connector matches the Solidoodle connector, That leaves on the heater cables to sort out.  I will probably solder splice to the existing wires so I can keep the connectors.  I will have to get some heat shrink tubing.

You should check the rating on those connectors. For the thermistor it doesn't matter, but for the heater it needs to take 25W @ 12V (or 40W @ 12V if your cartridge has all-red wires instead of blue). It'll melt if it can't sustain that load.