I had this same issue with a PLA coffee cup adapter my son made for me. I went out to the rig one morning after a hot sunny day and didn't think much of it. My coffee cup didn't fit, and I thought that was odd. My immediate inclination was that my son had printed a smaller one to play a practical joke on me, then I realized that it must've shrunk. We've (he has) since tried to print ABS, but can't get it to work well, even though the printer is supposed to be capable of printing ABS.
I gave up and just bought a coffee cup that fits my holder.
Not a bad idea for a practical joke lol. What printer are you guys using?
I’m going to be hitting the ABS hard this week after tuning and calibration, and will report what I find.
Are you guys using Cura or Prusa as a slicer? For ABS I like Cura, because they let you set not only first layer width, but also first layer flow. This is important for forcing a very thick first layer width; 1.5 to 2mm using 1 mm nozzle. The more “surface area” to adhere to, the better the chances of it sticking and for longer.
For this cup holder and any big print I highly recommend a bigger nozzle; I bought 20 from
AliExpress for less than 10 bucks; .6, .8 and 1mms (also some 1.2 that I haven’t tried).
This was the previous/last attempt that actually stuck. I actually stuck all 4 that batch then ran out of ABS to play with. Since then I have not went back to fix the support settings, as you can see support is too thick to be that close to the print. I will also reduce the gap in between lines as I do not need it to stick. It’s all about that fat first layer then just make sure the AC vent isn’t directly hitting it.
It’s also super sturdy at thicker layers and I’m sure I can get away with less infill (like 5%) and even use only 1 wall. It’s the same as using 4-5 walls at normal layer width of .4mms using .4 nozzle. You can save material while adding strength and greatly reducing print speed, with big nozzles. Also, many thinks you can’t get good prints with big nozzles; just remember to keep layer height low and you’ll be just fine. Reference my shelf brackets made with 1mm nozzle, 1.5mm line width and .3 layer height; took 12 hours instead of almost 3 days to print and is stronger. If I didn’t print them in the wrong orientation they would’ve not broken on the initial tests. Many would not know it was printed on big nozzle and huge widths, if I didn’t tell them.
Anyways, will share all of my settings after a clean print is achieved. So far what I know for sure is high temp, like 110-120 for bed (max my printer will go) and 235-240 nozzle temp (max my printer will go). This should be same parameters for most printers out there (with ptfe in the hotend).