I've never done squash.
Fruits, including some fruit leather that took forever and wasn't really worth it, leafy greens, peppers, tomatoes, herbs and candied flowers. Never blanched anything; just washed, drained and peeled where appropriate.
I can't remember the make - will check tomorrow (it's out in the storage shed); probably a good one, because the Old Guy bought it and he's not cheap like me.
If I were to dehydrate squash and zucchini, which I'm considering now, I would shred it and wring it out in a dishtowel before spreading on the tray.
