i3 Plus extruder stopped - looking for some advice please.

by TonyRodda

After about 15 months of very successful printing my i3+ has stopped extruding.
I'm fairly new to 3d printing and have some tech knowledge but I'm unfamiliar with this technology.
That is I don't understand the programming environment nor the language.
What are the first steps to diagnosing the problem?
(I have no specialist tools).
Regards, Tony.

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How do you print inside holes at the correct dimension?

by Animu

I am trying to calibrate my printer
I have the i3 plus with a bunch of upgrades, but none that should effect calibration
I am using Cura 4.0.0

I made a simple cube in CAD 20x20x20mm with a 10x10mm hole in the center
The outside dimensions are good ~20.04mm x 20.05mm
but the inside is too small ~9.8mm not 10
How do I fix this?

(without changing the CAD file / stl)

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Is this bad bed thermistor or something worse?

by Animu

My printer is starting to show crazy bed temps, which would lead me to assume the bed thermistor is bad.
However, the nozzle temps are also oscillating. When the nozzle temp dips low and starts heating, the bed temps go crazy, but when the nozzle overshoots to hot, then the bed temps are relatively constant. So could this be something else other than the bed thermistor causing this?
The bed is still hot, so I assume the heating element/ pad is still good

I have the i3 plus and am running ADVi3++ firmware (to accommodate a BLTouch) and have recently done a PID tune (before the temp weirdness)

Also would anyone recommend a good thermistor/ an equivalent one to stock so it has same values?
I live in the US so Amazon works best


For the pictures,
The bottom set of numbers is the set temps, the top is the measured
For the graph, the top orange line is extruder temp, the bottom blue line is bed temp.

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Duplicator 4 Octolapse settings

by WeaponsHot

Does anyone have the proper settings for octolapse for the D4? I'm using Simplify3d also.

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Erroneous Extruder Temp reading (Wanhao DI3 clone)

by FlashVZ

I originally posted this in the "Maker Select 3D owners" group but since the Wanhao DI3 is virtually identical to the Maker Select V2, I figured I'd post here as well and see if I could get some feedback this problem I have. That and this group has significantly more members than the Maker Select group. Anyway...

I'm a bit confused by this and I'm trying to figure this out. Maybe someone can help me out.

Anyway, the temperature reading for the extruder on my Maker Select V2 seems to hovering around 250C: http://i.imgur.com/1kLIPxx.jpg?2 ... it shows this very moment I boot up the 3D printer.

Prior to this, I had a colossal accident that resulted in me in replacing the heater block, heater core, thermistor, and hot end. Simply put, I didn't screw in the nozzle all the way when I replaced it, and after a while, a gigantic ball of filament got all over the wires of the heater core. After removing the excess filament, it seemed the cables to the core and thermistor broke off. Figured I'd just replace the whole assembly.

After acquiring spare parts to replace everything that broke, it seemed that the extruder temperature is spitting out an erroneous reading of a 250C. Everything is mostly OEM/Stock except for the hot end, which is a Micro Swiss all-metal hot end instead of a PTFE lined hot end (something I was meaning to pick up anyway).I'm not really sure what's causing this and maybe you guys can figure it out.

I also posted this issue on /r/3DPrinting but I didn't get much feedback there: https://www.reddit.com/r/3Dprinting/comments/6kcipy/extruder_temp_stuck_at_250_c_how_to_fix_it/


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Duplicator i3 Mini error


If I finish printing through a button in the menu, and then I start printing again, the printer starts to heat up, but after a few seconds it freezes and does not respond to commands. Only a multiple reboot helps. What could be the problem?

Sorry for my English :)

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Maker Select 3 V2.1 Stepper Motor Information

by lgv2016

Trying to verify/adjust the driver current for the stepper motors. The printer has "Moons Stepping Motors". Found their website, but none of their stepper motor part numbers match the ones installed in the printer. Does anyone have information on the following motors: C17HD6039-06N or C17HD40102-01N?

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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.

Finally got the 12v heater cartridges in the mail today. Crimped connectors in just above the hot end and attached everything. Now its heating great. 1m35s to 200C and 1m58s to 230C. Super fast.

heater monoprice_makerselect
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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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