QuoteJaneer This looks impressive, good work! But the sound is strange. tracking employee productivity site The extruder itself is silent. The delta printer is another story.by rq3 - Tech-Talk
I had this happen recently on my experimental pure silver heat block. Over time, the brass nozzle had alloyed with the silver, and destroyed the threads in the block. They were good enough to cold assemble, but lost their grip when hot. Check your threads carefully. Just a thought.by rq3 - Reprappers
never mindby rq3 - Firmware - Marlin
Quotearsi Quoterq3 You're making a fundamental error in thinking. Been there, done that. The extruder doesn't PULL on the filament (except to get it off the spool). It PUSHES the filament in to the nozzle. It's easier to simulate it that way. But it's about the same thing. I figured it out by measurements on a real hotend during extrusion. (50mm of filament at 1mm/s vs 5mm/s and the difference wby rq3 - Tech-Talk
You're making a fundamental error in thinking. Been there, done that. The extruder doesn't PULL on the filament (except to get it off the spool). It PUSHES the filament in to the nozzle.by rq3 - Tech-Talk
@OutcastZeroOne, how are the dimensional tolerances on those printed metal parts? Do they take shrinkage into account for you, or do you have to do that in the STL or STEP file?by rq3 - CoreXY Machines
Quotedekutree64 Interesting. Time to add an iridium nozzle to your collection of exotic elements? Nah. Almost 3 times heavier than copper with at best 1/2 the thermal conductivity. But this OFHC 101 copper just arrived for the latest heat block!by rq3 - Tech-Talk
Are you sure the USB baud rate is correct? My printer will successfully connect at either 115200 or 250000, but will only accept G code at 250000 baud. Just a thought. Prits fine from SD card.by rq3 - Reprappers
Quotesajjsamm Thank you very much for the explanation dude. As I understood, I should look for leveling to make fine first layers and adjust the nozzle's height during the print to make the corrections. Are there any other uses for 'the bed probing' besides the bed leveling procedure and using it as endstop? And the UBL saves the results in EEPROM? Correct, although at least on my printer, withby rq3 - Firmware - Marlin
Quotejianbagn21 yes, ... the size depends on possible speed and gearbox-ratio, best would be a small DC-motor with encoder. i just got several pancake stepper motor from here: https://www.oyostepper.com/category-64-b0-Pancake-Stepper-Motor.html With the mounting ears cut off, and the case lightened. I don't suggest this, as the case is almost foil thin in that area, the weight savings is negliby rq3 - General
Quotesajjsamm I'm wondering about the procedure and I'd like to know more about the difference since my bed is going to be huge like 1200mm*600mm and I need to be confident about my bed's surface before printing a huge first layer before it turns out to be a total mess. I'm going to use BLTOUCH in this case my probe = BLTOUCH. So using a BLTOUCH to create a map of the bed's surface is gonna be caby rq3 - Firmware - Marlin
Quotesajjsamm Any ideas? I can't answer your specific question, but I use an under bed piezo probe on my delta (https://reprap.org/forum/read.php?424,885697). Every few months I do a delta calibration, followed by a UBL bed leveling with a 1mm fade height. Every few months because the ambient temperature in my shop changes with the seasons, which affects the dimensions of the printer. I can relby rq3 - Firmware - Marlin
Quoterq3 You can see my previous posts on this topic. A pure silver heat block works fantastically well, until it doesn't. I have been using my pure silver block for over a year, with a brass mounted diamond nozzle, and the VDE-100 extruder. Today, the entire nozzle blew out of the silver heat block. Even though gold plated, the silver block slowly alloys itself with the tin and copper in the nby rq3 - Tech-Talk
Quotedc42 Quotearsi But the main problem, which appears with all knife shapes, I have not yet managed to eliminate. The pressure on the filament from the hotend, causes a change in the thread pitch at different speeds of extrusion and therefore the number of steps per millimeter. According to this video, I'm not alone This is why RepRapFirmware supports nonlinear extrusion, to allow for the exby rq3 - Tech-Talk
You can see my previous posts on this topic. A pure silver heat block works fantastically well, until it doesn't. I have been using my pure silver block for over a year, with a brass mounted diamond nozzle, and the VDE-100 extruder. Today, the entire nozzle blew out of the silver heat block. Even though gold plated, the silver block slowly alloys itself with the tin and copper in the nozzle, unby rq3 - Tech-Talk
Quotearsi Quote1) The knife edge had to be symmetric, or the extrude and retract would be different. I have tried different knife shapes and the best solution for me is to thin the bearing flange to 0.2-0.3mm and perpendicularly ground to the required diameter The force required for rotation has not changed... But the main problem, which appears with all knife shapes, I have not yet managed toby rq3 - Tech-Talk
If the heat sink and heat break are doing their job, the end of the heatsink closest to the nozzle will be darn close to ambient temperature. There's a good thermographic photo in this article: I build all of the components for the hot end and extruder myself, and can vouch for the accuracy of that picture.by rq3 - General
It almost sounds like the laser command is inverted? The laser is off when it should be on, and on when it should be off?by rq3 - Firmware - Marlin
"Genius is 1% inspiration, and 99% perspiration": Thomas A. Edisonby rq3 - Tech-Talk
Quoteleadinglights O.K., I seem to have gone cold turkey for a couple of months now, and, like many before me, I have kicked the RepRap habit: Perhaps now I will be able to sit on the sofa watching TV like any normal person, not dashing out to the workshop to take a measurement or print some new widget. Before I put on a recorded episode of "Drop the Dead Donkey" and break out the good biscuits,by rq3 - General
QuoteVDX ... we've made the same here in Germany (or EU) IP-range -- filed a patent and abandoned it shortly after, so no other party can "block" our open-source development with a similar claim In the United States of America, any public disclosure now qualifies. I am glad to see that also appears to apply to the European Union.by rq3 - Tech-Talk
QuoteOutcastZeroOne very cool to see how this design has progressed. Hope to see it continue to compact down, and hopefully not get stolen by anyone. Keep up the great work At this point, the Imperial version of the Schneckenstruder is permanently mounted on my go-to delta printer, and is the only extruder I use. And it's open source, so it can't be stolen. The fact that I've publicly provided tby rq3 - Tech-Talk
This probe is mentioned in Matlin's configuration.h, yet I can find absolutely no information on the probe itself. No website, no videos, nothing. Anyone?by rq3 - Firmware - Marlin
Quotesg1oneill It is working now! Thank you again. Interesting, and I still don't get it that my last version marlin, configuration.h shows: #define CONFIGURATION_H_VERSION 02010100 and this "new version" shows the same: #define CONFIGURATION_H_VERSION 02010100 ?Why is that? The two configuration files (configuration.h and configuration_adv.h) for Marlin may not change at all during several relby rq3 - Firmware - Marlin
@sg1oneill, I know there has been a lot of very recent work on the kinematics in Marlin, especially with arc geometry and linear advance. It has been changing, sometimes pretty drastically, on an almost daily basis. 2.1.1 is very different from 2.1.0. Just a heads up ;-)by rq3 - Firmware - Marlin
@Alvon3DprinTor, really nice! Two things I noticed when developing this: 1) The knife edge had to be symmetric, or the extrude and retract would be different. 2) The molten filament in the nozzle prevented torsional rotation of the filament, even for flexible TPU. It will be interesting to see if this is still true with only one roller and a rotating Teflon guide.by rq3 - Tech-Talk
Just an update as I play with the software. The original intent was to make a cheap, easy, and small filament detector with no moving parts. That mission is accomplished. Then it occured to me that movement of the filament might yield a detectable signal, so that this sensor would not only sense whether the filament is there (and it does, for all filaments), but also detect whether the filment iby rq3 - Tech-Talk
Quoteobelisk79 How exactly are you grinding a knife edge on such small bearings? I'd like to recreate one of these but I have a few limitations. I don't have a means to precisely drill a motor shaft hollow and I am unsure how I'm suppose to grind a double-bevel on a bearing flange (I should mention that I don't have access to a lathe and that may be the key to success). There are photos in thisby rq3 - Tech-Talk
QuoteVDX ... what's the stall-force of your piezo motor? The radial weren't so strong - have some linear (pushing an Al2O3-rod) with 8N stall force, but less for "sound" operation -- have them in reserve, when in need for an AFM The NEMA11 pancake stepper is about 10mNm, and works at rated current. The piezo motor is about 2 mNm, and is on the hairy edge, but will spin at 900 RPM, with a resolby rq3 - Tech-Talk