Is it possible to compensate the g-code for extruder fist order lag?

Hello,
It takes about 0.5 seconds from switching on my extruder to full material flow. It takes another half a second from switching of to running completely dry.
I printed a modell recently with a main body and a tiny column outside. Every time it came to this column the place where the column was supposed to be the printhead made a single tiny circle but it was too fast for the material to begin flowing.
The material was squeezed out on the way back and finally wiped off when entering the main body again.
Is there a way to compensate for this first order lag in the g-code?

about 8 months old thread, nvm.... if nothing is better to solve this you may try program linked in [forums.reprap.org] , you can manually edit/increase/decrease extrusion rate of the involved points due to the lag. fwiw.

If you do not get compensation in a slicer then increase your retract speed. It will not be that bad when you get it below 0.1s.

I've observed this effect on my Ormerod, however I think the extruder lag time is much less than 0.5s. I'm printing PLA at 180 to 195C. Another effect is that when doing solid infill, where the print head moves sideways and reverses direction, the head leaves a slightly raised area. I this this is because the head and extruder drive have slowed down to turn the corner, but the rate of extrusion has slowed down a little later.

To resolve it, I plan to add a configurable extruder lead time to my fork of the Duet firmware, unless someone can give me a good reason why it won't work.

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Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].