Trianglelab Matrix Extruder somebody?

DaBit

Good test indeed. I will do that when I have it apart again.

(Which I probably will; that plastic handle certainly cannot handle the 150C environment I plan to test, so I want to measure and CADify it.)

I do print carbon-filled filaments from time to time, so if they are not hardened I probably want a set of spare drive gears.

arhi

@DaBit said in Trianglelab Matrix Extruder somebody?:

carbon-filled filaments from time to time, so if they are not hardened I probably want a set of spare drive gears.

yup, they grind the teeth flat rather quickly if not hardened ... or tbh, they grind the brass teeth quickly, I never tried untreated steel teeth (both original and prc clone bondtech I have are with hardened teeth)

DaBit

Well, those gears are produced from some sort of tool steel anyway since it machines so much better than low-carbon unalloyed steel.

These shaft holders are made from 1.2510 tool steel (with aluminium the shafts would be loose in the holders at 150C, hence steel), hardness as delivered around HRC23. Bores and other features are nice and smooth after machining, even with a simple helical toolpath:

alt text

And this is simple hot-rolled steel, same machine, same endmill:

alt text

Difference in finish is well visible. Compare that to the picture of the drive gear, so they use at least something similar. Brass would be 1/2 the hardness.

On the other hand I hope they did not make the teeth too hard. That would fracture them over time.

Chriss

Hi *,

Let me come back to the topic.

Does anybody have some infos about the shipped thermistor? (24V)

I have the golden (brass) tube and a spring at the end of the cable. It looks like :
https://de.aliexpress.com/item/33029709571.html?spm=a2g0x.12010612.8148356.14.2b3743aavUups2 but with a spring like https://de.aliexpress.com/item/4000907614466.html?spm=a2g0x.12010612.8148356.2.2b3743aavUups2

I'm totally confused now.
Does anybody have some settings which work fine? Is anybody willing to share them and ideally the "M307" for the hotend. I have them connected to a toolboard which can not auto tune the pid.

Cheers, Chriss

Veti

@Chriss said in Trianglelab Matrix Extruder somebody?:

Does anybody have some infos about the shipped thermistor? (24V)

the thermistor is not 24v. only the heating element is.

they write they ship the thermistor with a Thermistor Semitec 104NT-4-R025H42G.
this is the same as the e3d one.

if you connected them to 24v, you will have destroyed the thermistor.

Chriss

@Veti

Hahaha.... well the amount of destruction depends of the current than.
Enough fun for today, I mentioned the 24V because I'm not convinced that the guys from copyland send the same thermistor whether it is a 12 or 24 Volt kit. Thanks for the hint, I did not see that. the German translation drives me creazy.

A Former User

@Chriss said in Trianglelab Matrix Extruder somebody?:

Hahaha.... well the amount of destruction depends of the current than.

if anything it would depend on time; as the thermistor has a negative temperature coefficient its resistance would decrease as it heats up, causing the temperature to increase. if left long enough both 12v and 24v directly connected to a ntc thermistor would cook it.

Chriss

@bearer said in Trianglelab Matrix Extruder somebody?:

if left long enough both 12v and 24v directly connected to a ntc thermistor would cook it.

Not if your source will deliver 0.001mA only.

A Former User

i don't suspect you'll find many of those on a duet

Chriss

@bearer Well, at least @PCR has one.

PCR

@Chriss i am only using PT1000 ones ;D

Veti

@PCR said in Trianglelab Matrix Extruder somebody?:

i am only using PT1000 ones ;D

same here.

Chriss

@Veti @PCR

Nice... thanks.... I will walk though the valley of tears than...

So you guys on the other site than.

A Former User

P1000 (and PT100) have positive temperature coefficients so they're inherently safe in that regards.

PCR

First the Matrix then a hemera. But Not the "new" one.

Chriss

Hey guys....

What do you guys use as steps at M92 for the matrix thingy? I use exactly 300 at the moment, they mention 336. :? I'm a bit lost now... My setting seemed to be OK in the past but I have a lot of problems since I changed the filament.

Cheers, Chriss

Schwende

Hi there,

if some of you are still interestet in watercooling the Hemera, I might have something for you: https://www.dold-mechatronik.de/mebs-Hemera-WaCo-Mod-PRE-SALE-special-price-Available-from-2932021

Have a nice weekend.