BLTouch is mounted to the fan mount (yours from the cad) with slack in the wires to it. If i push on it hard there is a tiny bit of flex in the mount but nothing like its loose.
They are zip tied to the top of the “core” before going into the umbilical
Correct
Ok just wanted to be sure. I forgot I cant mess with marlin from my desktop and the laptop is all packed away for the trip in the morning. So i will look at it while I’m gone and hopefully update it when we get back.
Umm, did your X rail fit perfectly on the trucks? If your front was out by 3mm, that rails is the most critical fit on the printer and on one of my first builds I had to shim a truck on one side to make it fit.
If it does not fit well it will move really weird and flex the frame as it travels front to back. If you measure across the top of the machine at the back (end of the rail) with the gantry parked all the way back, leave it there and measure across the front (at the front of the rail). Are the numbers exactly the same? If not there could be some flexing going on.
The one I had to shim I only noticed because when it moved front to back I could see the top rails flex apart and together. After that I started to pay attention to how well the rail fit and to cut the extrusions a bit short to allow for some adjustments.
I dont remember any issues at all with it going in. Before i put the front panel on i had a 3mm difference front to back. Now with the front panel in i only have a 1mm difference. And that difference goes away when the x rail comes forward. I can try to loosen the front panel some and see if i can get it perfect then tighten back down. But that made no difference in my mesh from before to after putting the front panel.
I’m also starting to wonder if this extremely high quality liner rail I got could be causing any of these issues…
https://www.amazon.com/gp/product/B07ZDRXVXJ/ref=ppx_yo_dt_b_asin_title_o00_s02?ie=UTF8&th=1
Finally made it back from school last night. First thing this morning I cut out the right side panel. One thing I noticed is there aren’t any screw holes down lower on the side. @vicious1 is this how you meant it to be or did it just not move right when I adjusted the parameters in the cad? If its right I’m good but if i need to add more holes i want to do it before I move it from the LR3 lol.
Well I got impatient and ended up going in estlcam and making a few more screw holes toward the bottom. Figured more couldn’t hurt anything even if they weren’t truly needed. I was able to select a row of tool paths for the holes, then copy and pasted them and moved it down. This allowed me to zoom in close and make sure I was placing it directly over an already placed hole and make sure they were dead in line where they should be. I know I could have went in and added more in fusion but every time I mess with that I end up screwing it up more than fixing it. I just didn’t have the patients for it this morning lol.
I wonder how this is going to look when it’s all edge lit. Thanks to @robertbu for all the help with the lighting. Hopefully it will stand out nicely with the logo on the front.
Still a bit of clean up left to do on it but all in all I think it turned out well. Had some skipped steps due to the bit wearing out on me but I was able to catch it and save it. Its the back panel so no one will ever see the slight messed up edges. The logo came out great I think. Cant wait to see it lit up!!
PSA…. Check your heater cartridges. Seems mine decided to back out some. Thankfully I was up late last night. Had it printing some cable chain parts for the primo and I was in the room. Smelled some burnt plastic and got up to check. Watch the flame start. Easily blew it out and shut the printer down. I know for a fact I had that tight tight. But I didn’t go back and retighten after a few heat cycles. I’ve never had that happen before but will definitely be checking all my printers regularly now. Looks like I’ll have to reprint the core and the fan mount.
Yeah. I had a nozzle back out after a few heat cycles with the latest build too.
This is a good reminder for me to go check all the other ones.
Glad to hear you caught things before they got out of hand.
Cheers for the PSA!
Did the nozzle loosen from hotend, or did heater loosen from hotend, or did entire hotend assembly loosened from the printed X carriage? Or something else?
Were these regular nozzles that were hot tightened, or REVO (which E3D instructions say not to hot tighten), or something else?
Wonder if any free open source camera AI tools running on a Pi would help catch something like this, as well as spaghetti incidents?
Cheers!
The heater cartridge had loosed and slid back from the hot end
Crazy…
I have had my hotends back out on the Hemeras about 1/10 of a tuen and melt the cooling fan duct on the V3. So far the V4 has been good. The V3 has been good too since I switched to the titanium heatbreak (but it was the tightening proceedure that I adjusted that I credit with it being good.)
Yikes.
Well guys I thought the printer was running great. Printed a few struts and everything came out beautiful and square so I decided to start printing a few replacement parts I needed. A new core and braces for the original LR3…
Then wanted to clean up the bearings and get my color match correct on the primo before mounting the laser. Needed 2 trucks for that. But figured since I had used the dreaded pla+ on the originals and had a brand new spool of regular pla I would go ahead and print all 4. And that’s were things started to go down hill…
Layer shift city. I don’t get it. Grub screws are tight (blue Locktite also) belts don’t feel over tight at all. The core looks great to me. So what am I missing???
Perhaps your build plate moved somehow?
Did you get a picture of the tops of those parts?
Is it possible the nozzle is dragging on the unevenness that appears to be present in those pictures and causing missed steps?
What happens if you print them one at a time?
Hadn’t thought of that. will double check that one
I don’t think this is it. I had this problem early on but now have z hop enabled and that hasn’t been an issue since.
Winner Winner chicken dinner. Reset the the clips and just made another print and it came out great!! Thanks for the suggestion!
Curious which clips caused later shift, thought you had magnetic PEI bed? Was wondering about cause being skipped step given the consistent distance when shift happened🤷♂️
