One thing not mentioned by anyone is the G31 probe offset. Are you sure it's OK?

@jay_s_uk
It's Q1 that fell off, but C1 is also written close to the pads and can easily lead to confusion.

@Phaedrux
Now that I have a working homeAll procedure, I've edited the existing gcode-files and the slicer start/end procedures. The wrong layercount is history now.

Hi folks,
today I tried to print ABS with my new enclosure.
I heated the bed to 110C and started the print.
After the hotend is at target temp, I usually call G28 followed by G11 and the print begins...
That worked without problems until now.
The probe went down 3 times as I've set in the config. But this time it throws an error:
probe readings not consistent

In fact, the nozzle digged into my LokBite surface and ripped it apart 10mm long. not funny!!

I'd expect the printer would stop at an error during homing?

This is the latest report:
I've updated to rrf3.2, changed a few minor settings from the config file I got from @Phaedrux (Z motor and probe needed to be inverted)
But still...

I also changed the z-probe port from zprobe.in to e1stop, but no change.

Anyone any idea? @fcwilt I'm now on rrf 3.2, you can chime in anytime

Is it possible I have my XY stepper config wrong? Their connectors would fit the Molex headers in both ways. They move the right way, but you never know...this is my last straw.

@Tpmoses
I can't comment on the BLtouch, but talking about losses Add a USV to your printer or a big battery to avoid power-issues.

Hi guys,
when I built my DBOT 3 years ago, I wanted to add mgn12 rails. But my CAD skills were pretty low, so the first attempt was very bulky and heavy.
Now I've re-designed it and it is around 600grams lighter than before. The angled steel bracket to mount the Titan and the 2020 crossbeam had the biggest impact on the scale. (literally )

The hotend bracket still has some details I want to change, but I'll post the final design on thingiverse after some real tests.
A short drytest with 180mm/s printspeed was succesful, without the need to tie down the printer.

@EmmanuelG
over night I had an idea, how to solve both problems at once (the torque problem at start and the nonlinearity)

Just replace the Z-stepper with a Spindlemotor and add a Mini-scissor

The torque will be high at Z=0 but the Z-lift will be low.
At the end of the move, it will be reversed.
Feel free to ask, if you have further questions
o_lampe

@fcwilt said in G30 S-1 is giving me heart stitches:

All right - v3.2 - good job!

I'm not so confident anymore, since I have to get used to the new gcodes and parameters. Will have to use the wiki quite often.

Printer is currently working, can't get the config or homing files.
BTW: I had to make a new PID tuning and write config-override, I'll post that too. Soon.

@1997alex said in can't go past 13mm/s:

M584 X0.1 Y0:4 Z2:3 E20.0

There's a typo in the drive-mapping. Maybe not....? Sorry

@deckingman
Your filament storage method is out off question for me, but I still stick to somethings wrong with cold start.
Might be, the firmware(s) of the boards involved click together easier after a reboot. I have created the habit, to issue an emergency stop from DWC, after I've played around with mesh bed leveling or Z-probe adjustment.
Just to give MCU and memory a clean wipeout.

@deckingman
I read the whole thread before I dared to ask: Don't you think it's funny, that it is always the first print that fails?
How do you store the filament? Maybe it needs some more time between storage and first print? A good wine needs to breeze, too

Just trying to think out off the box

@RichardDuke said in IDEX CoreXY, With Only 2 Motors.:

@o_lampe ahh yes your right about the energy thing at both ends, it will be equal so it will probably bind up and freeze. But I think it can be altered to accomodate. It is a little bit of a complex system though, electric servos are sounding pretty good at the moment haha

My design also failed. Because it has to be symetric in both directions, it doesn't push the switch over the hump.
I watched some videos (for kids) Subject: How a ballpen works. Ran them in slowmotion to see every bit of it. There is a trick how to overcome our dilemma. But I don't see the light yet. Some kind of rotating excenter...a triangle if you will. Let me sleep over it, I have best ideas when I wake up.

BTW: Did you know it took 66 engineers to invent the ballpen 1965?

@mrac1 Thumb up for naming the source of inspiration.

@RichardDuke
If that would work, it had a great advantage over my idea. The beam wouldn't have to travel to the far end, but switch carriers where it is.
But there is one thing, I have doubts. A Servo Saver would store a certain amount of energy, before it can move the pin in the brass bush.
The energy would release, the very moment when the pin fits in the bushing. But at the same time, it tries to pull out the other pin from the bushing. This is only possible by twisting the other Servo Saver because the other side is still locked.
Assuming both Servo Savers have the same spring tension applied, where does the extra energy come from? In my mind, both Servo Savers would stop in the middle, where the forces are equal.
Another point is the push action of the long connecting rod. That's never a good idea, but can be modified to a pull action with a different arm-setup.

I hope, I'm wrong. Let's find out by building a Proof_of_Concept thing.
Is there a way to avoid printing the Servo Saver V-grooves?

@fcwilt I know, there are other options. That's why I wrote only in Italic. I like the pragmatic approach and work with "what I have". And the challenge of the switching lock may help me with my toolchanger idea as well.

@3DPrintingWorld said in IDEX CoreXY, With Only 2 Motors.:

I'm not sure I understand the purpose of locking the carriages to save a stepper.

I believe most Duets sold are Duet_2 with 5 steppers. Only with this solution we have the chance to add a second independent extruder. (I'm sick of trying to get my dual nozzle chimera running)
And it's not a crippled IDEX; their usual usecase is: one extruder parked, the other working. (not that you said, it's crippled)

Copy-mode with two extruder running has the same issues as a dual nozzle extruder: one nozzle is scraping off the print, because the mesh bed leveling works for one nozzle only.

@RichardDuke Just for the record: with both carriers held in a fixed distance and the kinematics set as CoreXY, we could do the copy-mode too. (with the same issues as above)

@RichardDuke said in IDEX CoreXY, With Only 2 Motors.:

@o_lampe said in IDEX CoreXY, With Only 2 Motors.:

I'm trying to find a way to switch the locks without servos.
Just by moving against the far end of the printer, both carriers would simultanously push a springloaded switch, that toggles their lock/unlock hooks. Not sure yet, how to do this but it's there

You know what, I have done some finger paintings on my phone in bed, which I am not quite prepared to publish haha, but I think this may actually be possible. I will sketch something better in the morning

Keep your hands over the blanket they say

Here's a first design to play with. Needs some beefing up, but the springloaded steelball snaps the switch nicely from one side to the other. And the springload is not important for the lock, just to make sure it stays in place.

I agree with the need for absolute locking. My idea is to add another (strong) spring that pushes the carrier against the hook. I already found the place for the spring in my design, but have no spring that fits.
The parking procedure is:

• move the carrier against the limit and a bit beyond
• move the whole beam towards the far end of the printer
• toggle the lock(s) by pushing the switch into the toggler (not designed yet)
• change the kinematics and continue printing

@RichardDuke
In case of the Voron it seems, you'd fit the whole extruder with only two screws to the carrier? You would loose the screws, that otherwise hold the belt-clamp.
Is there a way to use countersunk screws, like I did?

I'm trying to find a way to switch the locks without servos.
Just by moving against the far end of the printer, both carriers would simultanously push a springloaded switch, that toggles their lock/unlock hooks. Not sure yet, how to do this but it's there

@DaBit
Looks good too.
I'm also sure there are SLA printers which dye every layer with an inkjet, but they don't fit in my budget.