Read this - the relavent bit is the section "Inherent config changes needed for all Cura users using Duet:"

https://betrue3d.dk/using-duet-with-cura-and-diamond-hotend-and-firmware-retract/

Looking good   Now to try my slic3r mods.  After this has cooled enough to remove the cube from the bed.

By Jove - that's stuck well

You're a "life saver" Dave

Bed released the cube and now running the new gcode.  

It did the bed probing twice this time   Doesn't matter...  I'll try a bigger cube next and maybe try increasing the speed back to the standard though at 60mm/s that might be a bit too fast.  The default "star" infill in slic3r is interesting

Print came off the bed - probably wants the Z offset changing.  This is set both in slic3r and the Duet.  I doubt this is right.

Put the Z offset back to zero in slic3r and it seems fine now though not finished printing yet.

Printing the 30mm cube now at twice the printing speed and it's looking fine.  Here's a photo.

Now printing a block 100x100x10mm with 60mm/s internal print speed, slower for perimeters, and 80mm/s for infill.  Going well though the first layer isn't perfect.  Maybe finger marks or other muck on the bed.  Haven't cleaned it for a while.

Looking a LOT better

I'm not sure it actually is printing at 60mm/s - doesn't seem quite as fast as with the Titan printer at that speed.  I think I could increase the speed further.  The Duet says this print will take 4 hours

I've noticed a couple of things that could do with improving on this printer - the drums are not a really close fit on the motor shafts and are showing a runout of something like 0.5mm and the Z wheels want adjusting as there's a small amount of slack on the rails.

13 minutes ago, tekkydave said:

Looking a LOT better

Getting there, I think

A couple of photos, nearly finished layer three and going on to layers with infill.  Not sure "star" is the most economical infill pattern.

Something a bit wrong - the Duet is showing

Quote

Object Height:

100 mm

but it should be 10mm and Layer: 31 of 333.  OTOH it's 73% done and has 20-30m left.  Most of that will be the top 3 layers as it's already around 9mm high.

Now half-way through the last three layers and about 10mm high   So the print looks correct even if the information isn't

Finished and looking good though the print has lifted off the bed at the corners.  Also the end g-code is not working correctly.

Corrected end code and adjusted a few other parameters in slic3r including speed at 4x what it was before.  Print is moving as fast as the carriages did for homing and bed probing and printing even better.  Printer is working fine now - just wants a bit of tweaking for best performance

Checked the size of the 100x100x10mm block and 99.93x99.97x10.49mm.  Latest print is flying   Trying a different infill - 3D Honeycomb.  Could have sparser infill though.

6 hours ago, Gina said:

I'm letting the current print finish as it looks good   Meanwhile, I've been setting up slic3r and added my start and end g-code copied from the ABS versions for my Titan printer.

But it looks like using slic3r instead of CuraEngine has cured the problem

i had a few issues with iffy print quality at first. my M555 is P2 for reprap and now the print quality is brilliant  

Bit of first layer porn... you can almost brush your hair in it

My M555 has been P2 all along.

22 minutes ago, Gina said:

My M555 has been P2 all along.

my bad, i meant mine is P1

I see.  Or do I.  My Titan printer uses Marlin and I set the Duet to the same for compatibility.  Anyway, Slic3r seems to work fine though I haven't tried support yet, which Cura is reckoned to do better.