That’s true. The only thing I can think of for getting an hourglass shape would be potentially applying uneven pressure during the cuts. The track saw track should give you a dead straight line, but only if you aren’t applying any lateral force during the entire cut.

I found a lot of useful stuff from this video from Foureyes, particularly around the 6 minute mark for the in/out method on the jointer. There’s also a similar up/down method if you have a table saw.

Ah, yes. I overlooked the budget. Well, I can at least attest to the quality of Qidi brand out of the box. Not sure on longevity, but I’m impressed so far.

I don’t own a Q1 pro, and my only experience prior to my current printer was an ender 3 pro.

But I bought a Qidi Plus 4 a couple of months ago and have been extremely happy with it. It’s fast, reliable, and has the heated chamber and high temp hotend. Multi-material is supposed to get added via the Qidi box in the first quarter if you wanted to add it on later.

I haven’t printed any engineering grade material on it yet, but all the reviews I’ve seen say it’s a piece of cake with advanced materials.

I think Sunlu’s 2 most recent dryers fit 3kg. The S4 requires printed parts to heighten though.