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SoliForum - 3D Printing Community → XYZ Printing DaVinci → REplacement Nozzle Diameter
Hello Everyone,
I recently got in a new stock hot end.
I noticed that prints were coming out a bit rough, and the filiment was coming out thinner than on my original hot end.
Using calipers, i measured the extrusion width of the original hot end (.4-.5mm), and the new hot end (.29-.33mm)
Has anyone gotten a new stock hot end and seen this issue? It should be a 0.4mm, if its the same specs as the original hot end.
Being brass it should be fairly soft. Could you not just put something small like a pin tip in there and carefully widen it a little?
Maybe there is a burr or some other artefact left over from manufacture?
Interesting, I have new hot ends with filament extruding thin. I thought it had to do with clogs/feedrate but maybe it is the diameter. I will take a look at my hotends tonight.
My Girlfriend has a hot end...ba bum tish!
I thought it might be clogged so I attempted to clean it. The cleaning wires that came with the Davinci dont even fit in the nozzle.
I updated the nozzle diameter in the Slicer settings and am printing some objects now, I will take photos of them when done
(Updated nozzle diameter to 0.3 instead of 0.4)
There's about a 20% die swell coming out of the hot end. If you extrude into air, a .3mm nozzle should produce a .36mm thread. If you're free air extrusion averages .31mm, your nozzle size is closer to .25mm.
My Girlfriend has a hot end...ba bum tish!
Should that not be ba bum tush!?
There's about a 20% die swell coming out of the hot end. If you extrude into air, a .3mm nozzle should produce a .36mm thread. If you're free air extrusion averages .31mm, your nozzle size is closer to .25mm.
Thanks for the info,
I'll also try .25mm in my settings when I am done. Slic3r yells at me if I try to have a height that is larger than my nozzle diameter... so it looks like I'll have to print at .25 or smaller (Not happy about this)
I have also contacted XYZ about this to see if they know anything about this (not holding my breath though)
XYZ Got back to me:
Dear Customer;
Please inform us your XYZware and firmware version and update it to the most updated one.
Regarding the issue, please be informed that the nozzle that you purchased is the newer nozzle and you can clean it by using the copper brush.
Thank you.
Best Regards,
Customer Care (Valerie)
XYZprinting Inc.
www.xyzprinting.com
Since I use Rep.92, I don't think they are going to help out much.
It makes me wonder if the newest firmware detects the nozzle differently? (Say from the circuit board?)
I was serious about using a pin...
I was serious about using a pin...
That might work, but I would rather not do this. If the bore is .25mm through the nozzle it would be best to use a drill bit to bore it out more.
Instead of doing this I may just keep it at .25mm and get an E3D v6.
Also thinking about it, this nozzle should work with PLA. I wonder if the smaller diameter was the change they made for this. Thinner = faster cooling ... means the lack of extra cooling fans may not matter. This is all speculation at this point.
I suggested using a pin because I felt that you would have more control than attempting to use such a fine drill bit. Pushing a pin (or other suitable tool) in slowly and in increments would be easier than trying to be accurate with a power tool IMO.
That makes sense about the PLA though.
If you decide to switch to a E3D, I would be glad to purchase your old (new) extruder if you decide to get rid of it.
Also thinking about it, this nozzle should work with PLA. I wonder if the smaller diameter was the change they made for this. Thinner = faster cooling ... means the lack of extra cooling fans may not matter. This is all speculation at this point.
No. The feed neck will be the same size as it still accepts 1.75mm filament, having a .15mm smaller nozzle definitely would not reduce cooling, rather make it harder for the extruder to push the filament down which may lead to the extruder slipping
I tried PLA in it, and didn't get good results... Not sure how XYZ expects people to print PLA with this Nozzle.
I also printed some things in .25mm nozzle diameter (in ABS) and they turned out fantastic.
I also purchased a E3D v6 and am going to install it sometimes this week or next weekend and keep the .25mm stock nozzle around as a backup.
I did some more tinkering while I wait for the ED3v6. to work on the original issue I had (original nozzle jams up every time I try to print).
Here is what I tried:
Moving the PCB board from in the nozzle to the carriage: Made No difference.
Replacing Thermistor: No Difference
Replacing Heating Block: No Difference
I then decided to put on the replacement nozzle, but also decided to move the PCB to the carriage.
Before I re:installed the new nozzle, I retried the original (with orignal Thermistor and Heater Core), but using the new nozzles PCB: Success
I ran a 6 hour print with no issues: Will be running more to see if this was a fluke, but it looks like it may have been the PCB board in the original nozzle.
That being said: you cannot buy these from XYZ. There are 6 pins in, and 3 devices : Fan, Thermistor, Filament Detector. I am going to see if I can find which pin goes to which (unless someone already knows) and if it adds any resistance to the Thermistor (i read somewhere that the 1.0 adds a bit of resistance so we cant use known therm tables, not sure if this is done on the mainboard, or in the PCB).
I am still going to do the E3Dv6 Conversion because I want to print with other materials, and this has given me an excuse to buy the Hot End.
I roughly extended the nozzle tip size and it is working great. Be careful with the nozzle tip, it is brass and is very thin near the tip so its easy to puncture a larger hole than intended.
I roughly extended the nozzle tip size and it is working great. Be careful with the nozzle tip, it is brass and is very thin near the tip so its easy to puncture a larger hole than intended.
Just curious, how did you enlarge the hole? Did you use the Pin method that was suggested?
My method worked but you have to be careful. I started by sanding the nozzle on a light sandpaper (very lightly) this made the tip softer to enlarge. I sanded it like .1mm-.2mm. I then took a wire that was close to .4mm and fed it through the nozzle (just like the filament, inside of nozzle to outside) I ran the wire back and forth until it moved smoothly.
So if you want to do this correctly. Get light sandpaper, sand it very lightly and make sure the nozzle tip is FLAT, it's easy to sand poorly and have an angle in the nozzle tip. Then use a .4mm wire and feed it through. You shouldn't have to force the wire through. If it requires force, sand the nozzle a little more until the wire doesn't need force to feed it through.
If you were on repetier, why enlarge the nozzle anyway? Speed?
If you were on repetier, why enlarge the nozzle anyway? Speed?
For me, speed and overhangs. I find that the thinner extrusion sags more on bridges.
Jason, how are you hooking up your thermistor? are you hooking into the circuit board? One thing I learned my lesson with the thermistor is NOT to use lever nuts to connect thermistor wires. The wires are not secure enough and last night I overheated my extruder to 300C + lol. Luckily my MK9 is all metal and it didn't burn anything out. I am lucky the machine didn't short either. I soldered the thermistor wires and am running fine now.
I am currently using the stock thermistor again as its still good. However if you need to change out thermistors, I would either solder, or use a crimp ferrule to secure the wires (with heat shrink)
Something like this should work: http://amzn.com/B00NVBX34U
SoliForum - 3D Printing Community → XYZ Printing DaVinci → REplacement Nozzle Diameter
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