Thursday, December 1, 2011

SFACT impressions

Having a lot of time invested in tuning Skeinforge 41, I wasn't keen on trying something else.   Print quality still suffered a few issues, mainly hole dimensions, but the parts were strong and were very close to the intended dimensions.

A couple of months ago in #reprap on IRC there was some buzz about  a modified version of Skeinforge. Previous experience has taught me that the 'latest and greatest' is always the former but rarely the latter.  Having switched nozzle sizes and not wanting to go through the tuning process again it would be a good time to at least try something else.

SFACT installs the same as Skeinforge without over writing any previous profiles.  Made the same changes to the Skeinforge modules as outlined here.  Followed the directions from the SFACT webpage and was getting better quality prints out the door.  The author has really taken the time to go through all the python modules to understand how the myriad of ratio-metric parameters interplay and distilled them into a few, easy to understand and, intuitive parameters.

It is as simple as measuring the diameter of the extrusion, picking a layer height slightly smaller than the measured diameter and a width slightly wider.

For example;
extrusion diameter = 0.37mm
layer height = 0.34
width = 0.40

The only way it could be more simple is if it let you enter the measured diameter and then set a single +/- value for the height and width.

Take a quick measurement of the diameter of the raw stock filament and you're in business.

Can't emphasize this enough, you must use a very precise measuring tool like a micrometer.  Calipers don't cut the mustard for these measurements.

My recommendation on SFACT is simple.  Go get it!
Bookoo kudos to the developer(s)

Thingiverse - SFACT

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