u/sometimeDIYer

I've had my H2C for three weeks, and I've always thought generally that the left and right nozzles perform the same way. This evening I was setting up for a print of another Translucent Holy Grail filament box. The box takes a bit over 13 hours, on the right nozzle, which I've been using for the most part to get failover from one roll to another. Tonight I sliced it, accidentally, with the filament assigned to the left nozzle. And then I noticed it was going to be a 5+ hour print, less than half the time. So that's where I am. I'll report back later. But this *really* surprised me.

I posted this picture the other day looking for help about what might be wrong. Someone suggested that it could be a warped heatbed, and that had me worried. I thought maybe instead it was a problem with my Frostbite plate... was I flexing it too much? Did I damage it? I had been focusing mostly on one side of the plate, but when I looked on the other side, the side that I always have down because it got a PLA stain, I saw a bunch of tiny pieces of printing debris. So I tried the Textured PEI plate that came with the printer. Worked great. No problems. And now the same with the Frostbite. I generally do not use the Textured PEI plate because it releases too easily. I ruined a very small print because of this.

https://preview.redd.it/palzngmg8dyg1.png?width=4032&format=png&auto=webp&s=f25d7d98ba11e1e00e8a208676c07b65cf0784d0

UPDATE: I figured this out... Lesson - DO NOT BACK INTO PARAMETERS. If I simply created the parameters for the length of a few of these lines first, it works as expected. Head slap.

In the image below, I want to create a measure constraint on the blue highlighted line. I had measure constraints on a few of the other lines, but removed them, thinking they might be interfering, but nothing changed. Fusion tells me it would be overly constrained and offers a driven constraint. It looks like all there are currently are perpendicular and equal constraints, but those parts of the sketch that would have to change length with a change of the measure I want to create are free to move, as far as I can tell, but clearly I'm missing something. How do I go about finding out what that something is so I can implement the constraints I need? I'm trying to make many of the dimensions parametric.

In

https://preview.redd.it/gaetm2o2obyg1.png?width=714&format=png&auto=webp&s=7116ebc03bf886bae2740ce2a93e455c0bb127a0

It recommended I clean and lube the lead screws and tension the belt. Do you think it’s on the right track?

Bambu H2C, Sunlu PETG Translucent. Bed 70, nozzle 270. The majority or the print is good.