Sometimes you just have to slow down. We spend so much time going for speed and volume. I noticed the Ultimaker 3s were printing at 40 mm/s, so I figured I’d try it. Three shells, 0.1mm layer height.
And you can see by the cooling fan orientation, why a guy might be printing a replacement carriage. 
ehhhhhh, I’m usually printing my fastest parts at 60-80mm/s and really I’m not pushing the machine very hard. The problem is that you printed with PLA. Which we advise people against…over and over and over and over in this community, but nobody seems to listen.
Me too, and at 0.2 mm layer heights, but this speed and layer height seems to be better for ringing and overhangs.
@ThantiK , You mean PLA for parts that can get warm like a carriage? Surely you’re not against PLA in general.
I also print 60-80 mm/s (always ABS so far), but if I have a part that I can’t tolerate extrusion lag artifacts in, I have to slow down.
@Dale_Dunn , I live in Florida. I’m against PLA…period. Leave a PLA part in a car, ever…at all, and it’s finished. I had my first Prusa i2 have to be completely reprinted because of it. Don’t print in PLA for structural components, for any reason.
@Mark_Rehorst if it’s quality your looking for then it would seem, giving up some speed is part of the price.
My dad (a car repair/sales guy & body man) used to say. “Good, cheap and fast; you can pick two of the three”
@ThantiK heh. Florida sun, humidity… Maybe that’s your problem, not the PLA. I spent two years in St. Pete, and you can have it.
Seriously though, even in Ohio, thin ABS parts have warped sitting on my dash. Cars are just solar ovens. It’s interesting to me that your whole printer had to be remade. I have some ideas that I want to use filled filament for, and that’s pretty much a PLA-only game. I’ll have to keep the structural limitations in mind. I think Tom has some high temp PLA on his list to test. I’ll be curious to see how they do.
Addressing @ThantiK 's PLA comment, the issues I’m reprinting for have surprisingly not been thermal. The ‘potentially hot’ side of the carriage, while showing some discoloration, hasn’t changed geometry.
And I’m kinda in a bind as the only printer I have working doesn’t have a heated bed, and the printer with a heated bed needs a carriage, so you do what you need to do.
Well, if the PLA carriage doesn’t work out, someone around here can surely send you one in ABS.
Once the bushings arrive in the mail, I’ll be able to print ABS…PLA carriages work fine for an extended period of time (this one’s been in service for more than a year.)
Nice and slow for precision high quality prints every time. My print speeds sit between 40 and 50 mm/s depending on the filament. The extra 20% of time is well worth all the speed issues that get avoided.
I use PLA quite a bit for prototyping. Living in a desert helps with humidity (non issue for me) however even ABS parts warp badly in a car. I just make sure my parts 9material) can survive in the environment they are intended for. I have PLA part cooling fan ducts on my machines that have been working for nearly 2 years with the end of the duct a 1/4" from the hot end. Even without cool air blowing through it there are no issues.
Worth adding since we’re talking about PLA and print speed… ABS can be printed a lot faster than PLA. It melts faster and solidifies faster. In mm^3 volume flow terms (which is what counts for print times) I routinely print 50-100% faster with ABS than PLA.
There’s also some anecdotal evidence that ABS produces less ringing for the same print settings, although I’m not real sure why that would be so.
I’ve gotta get Mongo up and running. I had issues with layer splitting in it’s previous iteration. I’ve put a volcano on it now. It’ll be interesting to see how it prints now.
All this talk about ABS and PLA and nobody cares to mention PETG? For me it’s the best of both worlds.
I need to give PETG more time to figure it out. I couldn’t get the supports off. I liked the lack of warping. Would it survive a hot day on the dash?
I like it, it just peels, and is kinda gooey.
Even better than ABS in the sun. It’s easy to print but difficult to master. It doesn’t have warpage like ABS but you don’t get easy perfect prints like with PLA.
Sun? Is that an auto-correct failure?
No, @Dale_Dunn asked how it would do on the dashboard of a car. PETG has better heat resistance than ABS and I think UV resistance as well
Ah, gotcha.
