General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections. https://reprap.org/forum/list.php?1 Tue, 14 Apr 2026 08:53:08 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?1,897479,897479#msg-897479 https://reprap.org/forum/read.php?1,897479,897479#msg-897479
Facchin Stefano.]]> Stefacchin General Tue, 17 Feb 2026 16:27:34 -0500 https://reprap.org/forum/read.php?1,897440,897440#msg-897440 https://reprap.org/forum/read.php?1,897440,897440#msg-897440 When printing i have noticed that the printer does the first layer then it retracts the filament too much that it gets out of the extruder.

This is the gcode for the layer change:
G1 X64.582 Y65.314 E45.36642
G1 E44.86642 F60.00000
G92 E0
G1 Z0.440 F7800.000
G1 X55.034 Y44.859 F7800.000
G1 E0.60000 F60.00000
G1 F3600
G1 X55.406 Y45.252 E0.62326

does anyone had encountered this problem before?
Any suggestions are welcome and thank you!]]> Stefacchin General Mon, 26 Jan 2026 13:04:26 -0500 https://reprap.org/forum/read.php?1,897427,897427#msg-897427 https://reprap.org/forum/read.php?1,897427,897427#msg-897427 HSNSBBH General Sun, 11 Jan 2026 07:58:16 -0500 https://reprap.org/forum/read.php?1,897390,897390#msg-897390 https://reprap.org/forum/read.php?1,897390,897390#msg-897390
TIA.]]> Dilemma General Wed, 24 Dec 2025 22:46:40 -0500 https://reprap.org/forum/read.php?1,897353,897353#msg-897353 https://reprap.org/forum/read.php?1,897353,897353#msg-897353
This is a Legacy Marlin 1.1.8 question.
I have an old Folger Tech Kossel 2020 with an E3Dv6 and a physical probe that needs detached that puts the point dead-on the nozzle and 32mm lower.

Should you disable the current UBL mesh before starting a UBL probe run?
I am wondering about interactions.
I ran my three towers, got them all about perfect with a 0.1mm feeler gauge and my 0,0 was -0.05.
I did a UBL run, got pretty good bed level and printed all but an extreme corner on my Delta well.

Then to experiment, I set up and ran a G33 calibration, saved it, ran G29 to to do another bed level after saving the offset adjusts and tower angle trims.
Total flub, the tip was too close to the bed. I won't do that again!
So then I wiped the G33 trims from the source, pulled the source in and M500, clean start...
I disabled UBL (G29 D)
bed leveled my towers and checked my zero, all pretty good, then ran another UBL pass and it said most of the bed was -1.xx! What?

So, where am I going wrong?
Is G33 (delta calibration) a bad idea if you get your bed apparently level, or a bad idea in general?
Can you do a UBL bed level with UBL currently enabled? The UBL pages and demo code don't seem to.

It seems the more I try to do, the worse things get! It seems I should have left well enough alone.

(edit 1)
I turned off UBL, leveled the plate using 0.2mm feeler (maybe 0.1 is too agressive), got a 0,0,0 measure at between 0.2 and 0.25. Did a "bed level" print out to the extreme printable edge of 90mm radius that looked perfect. So, I am considering doing a UBL bed level to see what it comes up with, but never turn it on...
( )

(Edit 2)
I found it. My switch had moved up around a mm on its mount because the screw holes were larger than the screws and when the probe had an "aggressive meet with the bed" it pushed it up. Did new probe height and things NOW come out right. Always check your assumptions...
Move along, move along, nothing to see here...
()

Any suggestions welcome!

Be well,
DLC]]> dlc60 General Mon, 08 Dec 2025 23:36:34 -0500 https://reprap.org/forum/read.php?1,897324,897324#msg-897324 https://reprap.org/forum/read.php?1,897324,897324#msg-897324
[attachment 121545 1.png]
[attachment 121546 2.png]]]> MrAnubis General Mon, 17 Nov 2025 03:18:29 -0500 https://reprap.org/forum/read.php?1,897322,897322#msg-897322 https://reprap.org/forum/read.php?1,897322,897322#msg-897322
I am looking for a URL, or maybe a text file from several years ago, possibly before 2018. This was a list which included most of the commercial as well as RepRap and published maker-built FFF 3D printers. Although there may have been other details, I do remember that this included a classification of the type of kinematic mechanism used by each printer. There were many printers included, possibly over a hundred types.

Thank you for any information you can give me.
Mike.]]> leadinglights General Tue, 18 Nov 2025 09:55:43 -0500 https://reprap.org/forum/read.php?1,897288,897291#msg-897291 https://reprap.org/forum/read.php?1,897288,897291#msg-897291 USer e-mail is also listed on various spammer lsits]]> Dust General Wed, 31 Dec 1969 19:00:00 -0500 https://reprap.org/forum/read.php?1,897288,897290#msg-897290 https://reprap.org/forum/read.php?1,897288,897290#msg-897290 VDX General Wed, 31 Dec 1969 19:00:00 -0500 https://reprap.org/forum/read.php?1,897249,897249#msg-897249 https://reprap.org/forum/read.php?1,897249,897249#msg-897249 I’m building a 3D printer with Arduino Mega + RAMPS 1.4 and I’d like to add a touchscreen display to control it (menus, axis movement, temperatures, print from SD, etc.).

I’ve seen options like the MKS TFT and BigTreeTech TFT screens, but I’m not sure which models work properly with RAMPS 1.4 or how exactly they should be connected (only through EXP1/EXP2 or also through the serial port).]]> Kowalsky General Tue, 14 Oct 2025 00:29:24 -0400 https://reprap.org/forum/read.php?1,897203,897203#msg-897203 https://reprap.org/forum/read.php?1,897203,897203#msg-897203 RepRap Wiki - Cost Reduction but I want for the actual version to be linked to the new version as legacy.
What do we have to do to change the name of the actual page to after create a new page with the actual name (so that the new page is linked to the actual url so that everyone clicking that link goes to the new page that has a banner pointing to the old version for legacy purposes.

if it's not possible, it is possible to link to an historic version of that page?

Edit: I've come across the rename function in the wiki, it's the way to go for my need, but your appreciation whether I Link the new page on the old (adding a banner cross referencing without renaming the original page) or the other way around (adding a banner cross referencing with renaming the original page).
Edit 2: Here is the WIP of the Cost Reduction Updated and it's original and legacy version Cost Reduction]]> ddrmax General Mon, 15 Sep 2025 03:32:00 -0400 https://reprap.org/forum/read.php?1,897134,897134#msg-897134 https://reprap.org/forum/read.php?1,897134,897134#msg-897134 calibration calculator to make dialing in your printer much easier. please check it and tell me if it need improvement and do it help you in dialing the correct values.]]> zainabbas General Tue, 26 Aug 2025 21:25:36 -0400 https://reprap.org/forum/read.php?1,897133,897133#msg-897133 https://reprap.org/forum/read.php?1,897133,897133#msg-897133 zainabbas General Sat, 23 Aug 2025 14:07:19 -0400 https://reprap.org/forum/read.php?1,897018,897018#msg-897018 https://reprap.org/forum/read.php?1,897018,897018#msg-897018
As for board, I used to use Ramps 1.4. What would people recommend these days? Seems like Bigtreetech is dominating that sector, but there’s a lot of options.]]> Mortirey General Thu, 31 Jul 2025 01:52:22 -0400 https://reprap.org/forum/read.php?1,896975,896975#msg-896975 https://reprap.org/forum/read.php?1,896975,896975#msg-896975 For example, the attached file proposed a method to monitor nozzle clogging.]]> chorddance General Wed, 23 Jul 2025 04:08:04 -0400 https://reprap.org/forum/read.php?1,896900,896900#msg-896900 https://reprap.org/forum/read.php?1,896900,896900#msg-896900 Guapo999 General Wed, 02 Jul 2025 14:33:11 -0400 https://reprap.org/forum/read.php?1,896893,896893#msg-896893 https://reprap.org/forum/read.php?1,896893,896893#msg-896893 chorddance General Mon, 30 Jun 2025 01:59:33 -0400 https://reprap.org/forum/read.php?1,896854,896854#msg-896854 https://reprap.org/forum/read.php?1,896854,896854#msg-896854
This my first post on this forum, so I hope I have the right location.

Anyway, I have just obtained a faulty Leapfrog Bolt Pro, very cheaply, however it has been worked on and some parts are missing.
I'm still trying to figure out whats missing, and as Leapfrog have now closed, the amount of information online is pretty sparse.
So far I see its missing the following parts.
Raspberry Pi board.
The attached fan board.
The touch screen.
If anyone can please send and close up photos of the Raspberry Pi assembly, and let me know what the daughter board with the fan is, it would help immensely.
Additionally, if there is a wiring interconnection schematic anywhere, that would ease my work as well.
Lastly has anyone modified one of these machines using other controllers etc? This may be a route I need to go down.

Thanks in advance.
Bob .]]> sidekick1200 General Mon, 21 Jul 2025 01:49:50 -0400 https://reprap.org/forum/read.php?1,896835,896835#msg-896835 https://reprap.org/forum/read.php?1,896835,896835#msg-896835
It's based on 3.00/2.85mm diameter filament. I still use my DIY printed cold end bowden fishbone extruder and I'm looking to replace it with something a little bit more beefy and accurate.

I've found this but it's out of stock:
[nl.aliexpress.com]
[www.3djake.com]

Though the bondtech is a little pricey. I'm looking to spend like 20-70 euros max.

Is 3.00mm diameter stuff dead? Is 1.75 the way to go now? That would be a shame for my 3mm hot end E3D v6 I believe to be replaced. And still a decent amount of 3.00 filament that I still have in stock.

Any advise is appreciated!]]> imqqmi General Sun, 03 Aug 2025 12:42:44 -0400 https://reprap.org/forum/read.php?1,896755,896755#msg-896755 https://reprap.org/forum/read.php?1,896755,896755#msg-896755 caminoracer General Mon, 14 Apr 2025 11:02:59 -0400 https://reprap.org/forum/read.php?1,896699,896699#msg-896699 https://reprap.org/forum/read.php?1,896699,896699#msg-896699
I already upgraded the old 3mm hot end to a V6-clone 1.75mm hot end. However, it uses a PTFE tube, which I'm starting to get worried about. Though I only print in PLA, I'm still worried about over-heating the PTFE tube and creating unwanted fumes.

I think the solution to this is to get an "all-metal hot end", but searching on the Amazon Japan site (which is where I would be ordering from), I noticed that some so-called "all-metal" hot ends still use a PTFE tube. For example, this page shows assembly instructions for a so-called "E3D v6 All-Metal HotEnd", but it shows use of a PTFE tube -- and includes instructions to heat the hot end to 250 degrees C after inserting the PTFE tube.

Maybe my terminology of "all-metal" is wrong, but what I'm interested in is a hot end that does not use any PTFE.

Do you have any suggestions for 2025 for a good all-metal hot end, for printing PLA, that does not use any PTFE? About how much should I expect to pay? Would it work for printing PLA?

Thanks in advance for any advice.

----

P.S. I noticed that [forum.prusa3d.com] says "The the "all metal" design produced by E3D, there is PTFE but only up in the cold end that never gets hot", so maybe the PTFE tube is not really a concern in this hot-end (V6-style)?]]> qrp-gaijin General Tue, 17 Jun 2025 19:09:31 -0400 https://reprap.org/forum/read.php?1,896694,896694#msg-896694 https://reprap.org/forum/read.php?1,896694,896694#msg-896694 does anyone know what causes stopping extruder motor in the middle of
the print ? Recently I switched from Arduino Mega - Ramps 1.4 to MKS Gen_L2.1 with
TMC 2208 steppers. Everything worked fine, did some succesful prints
but now extruder motor stops in the middle of print while all axes still moving.
Extruder is not clogged, just motor does not moving - it happen in the middle of the print.
I changed for new motor, new stepper, changed voltage 0,8-1,2 and it is the same behaving.
I use the latest version of Marlin 1.1 with bug fixes.]]> Arnold General Thu, 06 Nov 2025 20:59:52 -0500 https://reprap.org/forum/read.php?1,896683,896683#msg-896683 https://reprap.org/forum/read.php?1,896683,896683#msg-896683 Nebular1981 General Tue, 25 Mar 2025 07:15:59 -0400 https://reprap.org/forum/read.php?1,896637,896637#msg-896637 https://reprap.org/forum/read.php?1,896637,896637#msg-896637 I would like to ask for experience with MKS GEN-L V2.1 board.
I use til now Ramps 1.4 on Arduino Mega and wanted to try
new board that can handle 24V. Because it is board 12/24 I wanted to set it up first on 12V.
So I just reconnected cables from actual Ramps/Mega setup I have for years.

After reconnecting cables I turned it on and probably something was shorted
on the board. There are two little things with numbers on it 15 and 30 very close to main
power connectors. I searched for it and it is probably called continuous fuses. I tried to measure the one
one that look shorted - 30- (cloud around) and I measured 12V. The another one -15- looks ok, but
measured nothing on it.

Actually board worked ok, moving, homing...
I tried to heat up extruder and it behave strange, I set up just 40°C, but temperature
raised so quickly and on 50° it stopped with some time out or something on display.
After that I turned off-on machine and tried to heat up bed and then my 12V power supply was shorted.

I controlled cables, everything is exactly same I had on Ramps/Mega I used for years.
Power source I had 12V30A

Does anyone know what was wrong, what could happen ?]]> Arnold General Wed, 12 Mar 2025 03:41:39 -0400 https://reprap.org/forum/read.php?1,896620,896620#msg-896620 https://reprap.org/forum/read.php?1,896620,896620#msg-896620 KILDET General Wed, 05 Mar 2025 14:37:23 -0500 https://reprap.org/forum/read.php?1,896604,896604#msg-896604 https://reprap.org/forum/read.php?1,896604,896604#msg-896604 caminoracer General Sun, 02 Mar 2025 23:31:34 -0500 https://reprap.org/forum/read.php?1,896603,896603#msg-896603 https://reprap.org/forum/read.php?1,896603,896603#msg-896603 Mica General Sun, 02 Mar 2025 16:03:14 -0500 https://reprap.org/forum/read.php?1,896588,896588#msg-896588 https://reprap.org/forum/read.php?1,896588,896588#msg-896588
I apologise if my terminology is poor this side of machine building is definately not my forte but willing to learn !

Im wanting to home both X and Y axis at MINIMA or front left as i keep calling it

Is my config in the correct order ?

Im using a Millenium Milo file as my basis to get started

[github.com]

So have done a fresh flash and onto my wifi network all good
Z axis direction is good and homes at top of travel and the Maxima travel downwards direction is spot on and stops at 350

The X axis on X homing travels in the wrong direction X+ in movements of 5mm everytime the home X button is pressed ?

The Y axis on Y homing travels in the wrong direction Y+ and the additional stepper (A) on the Y axis moves further than the Y stepper by double the amount at a rough guess maybe microstepping need a definition for the A drive ?

Once the second ( slow home ) home on the Z drive is done it needs to move further away from the limit stop as its still resting on it if this is an issue ? This maybe the case for all 3 axis (edited)



; user-config.g - Configure machine or user-specific overrides

; Set steps per mm.
M92 X640 Y640 Z640

;M569 P3 S1

; Set drive mappings to relevant axes
M584 X0 Y1:3 Z2

; Configure acceleration
M201 X300 Y300 Z200

; Configure maximum speeds
M203 X2500 Y2500 Z2000

; Endstop X=MIN: NC
M574 X1 S1 P"PC_6"

; Endstop Y=MIN: NC
M574 Y1 S1 P"PA_8"

; Endstop Z=MAX: NC
M574 Z2 S1 P"PD_12"

; Set axis limits - minima
M208 X0 Y0 Z-350 S1

; Set axis limits - maxima
M208 X1450 Y2200 Z0 S0

; Configure jerk
M566 X500 Y500 Z200

Edited 2 time(s). Last edit at 02/26/2025 06:53AM by Scylla CNC Build.]]> Scylla CNC Build General Fri, 28 Feb 2025 13:08:58 -0500 https://reprap.org/forum/read.php?1,896480,896480#msg-896480 https://reprap.org/forum/read.php?1,896480,896480#msg-896480 I would like to know how to configure a new 4 Axis 3D printer to Ultimaker Cura and/or PrusaSlicer that use RepRap firmware and I have all .G codes if needed please.

I will be using Big Tree Tech Octopus Mother board, if that helps in any way.

Many thanks in advance

Siamak]]> siamak General Sun, 09 Feb 2025 14:13:02 -0500 https://reprap.org/forum/read.php?1,896472,896472#msg-896472 https://reprap.org/forum/read.php?1,896472,896472#msg-896472
I am trying to ubuild a 4 Axis 3D printer from an Open source , this one

[github.com]

With the slicer this one:

[github.com]

Would any one help me PLEASE to understand the concept of the files System of Reprap and how to load the ReapRap Firmware to the Controller Board I have mentioned above.

I was told that, in order for the slicer to work I will have to load the .G codes where the Python files are, but how and where Please?

And last but not least, how to prepare the SD card for this particular project please.

The Parts I am printing at the moment the most important part of the whole project relies on your kind help and responses.

Actually yes I am retired Old Engineer but I have not yet understood the concept of RepRap Firmware and its implications at this point in time.

My deepest thanks to all.

Siamak]]> siamak General Sun, 09 Feb 2025 14:14:47 -0500