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I think I have a way to go with my calibration circle

[img]https://dl.dropboxusercontent.com/u/966 ... 0x1000.jpg[/img]

Unfortunately we can't tell if its a delta calibration issue, a Z height issue or simply a bed-to-filament bonding issue from that photo. Perhaps you could describe how it unfolded?

mhackney wrote:...describe how it unfolded?

"Completely"

g.

You quack me up!

It's probably primarily a bed bonding issue. Plain, clean glass has worked well for smaller objects with solid bases, including one 90x60mm. But those long stretches of filament didn't stick and were being pulled off the bed.

I think I have the Z height calibrated, but I haven't calibrated either the extruder or the first layer thickness.

What that picture says to me is "slow down; you're trying to run instead of walking." I might try again with purple glue but if that fails I'll go back to the small single layer and the calibration cube.

What that picture says to me is "slow down; you're trying to run instead of walking."

Hmm, where have I heard that before

Or, "Use more Aquanet purple"

Seriously, take the glass outside, spray enough aquanet on to completely cover it with a wet surface. You'll be amazed at the great results.

Clean and respray after 20 prints or so.

Well one error was having the letters protrude 0.2mm below the rest, which obviously was printed without support. *blush*

I've just printed one at half diameter. It printed well on clean glass with some variation across X-YZ. No this isn't the HE280. Probably still some levelling to do of the order of 0.2mm edge-edge.