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Wanhao I3 Plus mk2 wont extrude after pause

by craighkzn

Hi all.
My wanhao I3 Plus Mk2 will not extrude after pause or power resume..x, y & z return to correct position, and "print " resumes, but extruder motor does not run for the rest of the layer...then begins extruding on the next layer, but of course it's a mess....anyone else have this issue....updated to the latest firmware, tried scripts in cura and machine pauses...all the same issue...really means I cannot change colours in a print....any advice would be greatly appreciated.

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MP Maker Select V2.1 heating woes after upgrades

by kenvan19

I've been printing since Aug 2018 when I initially got the Monoprice Maker Select V2.1. I first upgraded the bed to a glass plate which helped things immensely but I'm a tinkerer and I couldn't let well enough alone. I kept upgrading things. Next was a DiiiCooler which again was a fantastic upgrade. I decided to print a Z-Brace which went fine and at that point I figured since I had the whole thing apart I would upgrade the extruder lever and hot end with the Micro Swiss all metal versions. Up to this point, everything was fine.

When I went to put everything back together though I had a big problem: One of the wires on the heat cartridge snapped. I read around and saw that it was a relatively easy fix so I found a heat cartridge online and ordered it. I was stupid, though, and I got a 6mm cartridge instead of the 6.3mm one. After trying to make it work I gave in and ordered the 6.3mm ones. They finally came and now I've gotten one installed but now it will only hit 200C if I don't have any kind of thermal protection on the hot end. With thermal protection it peters out around 175-180C.

I'm still so new to all this...wiring included and I assume I've done something entirely stupid that has either ruined everything or is very easy to fix but I can't figure it out. So, I'm putting it out there. I'll do my best to answer any follow-up questions but I'm putting up the white flag.

Here are the parts I've changed:
Hot End Fan - https://www.amazon.com/gp/product/B00NEMGCIA/ref=ppx_yo_dt_b_asin_title_o03__o00_s00?ie=UTF8&psc=1
Thermal 'Sock' - https://www.amazon.com/gp/product/B07D9C3S65/ref=ppx_yo_dt_b_asin_title_o05__o00_s00?ie=UTF8&psc=1
Heater Cartridge - https://www.amazon.com/gp/product/B071GNXDFY/ref=ppx_yo_dt_b_asin_title_o06__o00_s00?ie=UTF8&psc=1
Thermistor - https://www.amazon.com/gp/product/B07B3ZYBTM/ref=ppx_yo_dt_b_asin_title_o07__o00_s01?ie=UTF8&psc=1
Heater Block - https://www.amazon.com/gp/product/B07B4J5MRB/ref=ppx_yo_dt_b_asin_title_o07__o00_s01?ie=UTF8&psc=1
All Metal Hotend - https://www.amazon.com/gp/product/B01E1HANLS/ref=ppx_yo_dt_b_asin_title_o07__o00_s01?ie=UTF8&psc=1
Extruder Lever/Plate - https://www.amazon.com/gp/product/B06WVB6CYD/ref=ppx_yo_dt_b_asin_title_o08__o00_s02?ie=UTF8&psc=1

Update: I've double checked all the connections and this time instead of being fancy and trying to solder the new heater cartridge in I've attached it directly into the board. Still hitting the 180C-ish mark and petering out. I did do a test to see at what registered temp PLA is able to start flowing and the machine is registering around 175-178 before PLA will start to come through the nozzle which seems to be about right (depending on the quality of material which since I just grabbed the filament that came with the printer originally I'm guessing was low).

I am currently trying to run a PID auto-tune which I think is going to be a bust since with both the hot end fan and extruder fan running the thing is struggling to even hit 100C.

heater monoprice_makerselect
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Not extruding on one side of the bed - NOT A BED LEVELLING ISSUE

by Jibbajabba

Hi all,

I've got a really odd issue, wondering if anyone has seen it before or knows what could be causing it.
My i3 will not extrude on the left side of the bed but is perfectly fine on the right side. This isn't related to bed levelling because if I raise the Z axis up away from the bed, heat the hot end and move the extruder position so it extrudes filament, it works fine on the far right. If I move the X over to the left, from about the centre of the bed to the far left it won't extrude.
Can't for the life of me figure out what could be causing it.

Any guesses??


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Prints fine then under-Extrudes

by Z408

Monoprice Maker Select Plus Printer. Hatchbox PLA. This is my third print of this pot for the wife. First two were fine. Then the last one, half was into the print and it starts to under-extrude. I can hear the gear clicking. I let it finish, then I decide to print another one without doing any changes. It seems to start fine, maybe slight under-extrude. Then I stop the print and just feed filament through, it feeds fine, no clicking.

I notice that my printer never leaves a stringy mess. If I forget to add support, then at that section, no filament comes out. I would expect it to still extrude filament even though there is no support. My printer seems to print really well on the first layer. I feel that it needs the bed to "pull" out the filament.

Anyone have any ideas? I order a new extruder gear yesterday. Hoping that makes a difference. I am attaching pictures of the under-extruded part and the very next print without doing any changes.


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Stringing and under extrusion after move

by Kireas

Hi all,

I'm using the Wanhao version of Cura as my slicer with the i3 Plus. I was trying to get the first layer of my print correct when I noticed that after a travel move, the printer under extrudes for that initial section while subsequent areas are okay. The problem is repeated on subsequent layers. Infill also suffers from the same problem which ends up having a part of the infill having the 'weak/stringy infill' problem.

I also have a stringing issue. The string ends up getting dragged around when the printer is moving over areas which ends up creating an extra protrusion/section on it's own as it's layering over the same place.

I've reduced print speeds and increased overlap, to no avail. I've also reduced retraction speed and distance, formerly 40(mm/s)/7(mm), current 30/4.5 and saw no difference in the issue. I also increased the width of the initial layer as well, though it was just a 5% increase. I'm not sure if the problem lies with oxidation of the filament as I've seen bubbles formed when loading the filament. Didn't hear any sizzling though.

Can anyone help on this matter?

Cura settings

Start/End Gcode

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