How hard (or easy) is it to print with Tough 1500 V2

[Friedl_1977]

Hi @henryqiu -

Thanks. For this print now I autogenerated support. I left them all at 0.45 but edited some so I only have support touch points on the bottom part of the model.

Feel free to comment

I would like to try and print directly on the platform as well. This is how I used to print these using Standard V5 and have the early layer settings set up to eliminate elephant’s foot. That said, not sure how to dial those in for Tough 1500 though.

Regards

[henryqiu]

The same principles should apply, but I haven’t tried tweaking them myself for 1500 V2. In general (across all resins) I’ve found it easier to just add a chamfer to the bottom surface (printing against the build platform) of ~1mm and usually that’s enough to eliminate any elephants footing in a pinch.

[Friedl_1977]

@henryqiu -

Ah ok, interesting idea. So you chamfer it in the model itself? You also compensate in Y-direction for the compression of the first layer right?

Regards

[henryqiu]

Nope, the chamfer is a janky quick substitute for compensating in Y compression for the early layer outer boundary offset. (by default, it already compensates, but editing the values in PSE allow you to tweak it further) The latter is the “correct” way to do it, but often times I’ll just throw a chamfer on the bottom surface if I’m making the CAD anyway. Here is a crude drawing, the left model is just a cross section of a cylinder, and the right model is the same cross section but with the bottom surface chamfered. The expanded elephant’s foot then “expands” into that missing space and isn’t perfect but usually a value between 0.5mm-1mm usually makes it close enough to satisfy me.

Here is an actual screenshot of it in practice. Left is a larger chamfer (1.5mm) and the right is a little more subtle (0.6mm I believe?). This way, the charging port doesn’t get

And these are awful pictures but this is how they turned out irl:

1. Larger chamfer:
   

   

2. Smaller chamfer:
   

   

3. No chamfer (you can see the protrusion of the elephant’s foot):
   

   
   
   
   

[Friedl_1977]

Hi @henryqiu -

I will try both. Just bit cautious due to the cost of experimenting with Tough 1500 Will maybe use small cubes to see how it turns out.

Regards
Friedl.

[Friedl_1977]

@henryqiu

Any chance Formlabs can give clarity about the settings required for the Tough1500 V2 resin to avoid the mixer error?

I did the following:

• adjusted the mixer speed settings downwards (both directions) to 50mm/s but that did not help.
• Pre-heated the resin to 35C… also did not help
• I then adjusted the temperature in the print profile editor to 40C which seemed to have worked BUT..

I cannot say for sure whether that was it or whether the just luck that it ended up starting to print eventually. Took me about an hour to get the first print going.

Regards, Friedl.