... or two before I can get around to actually setting up the machine, with Christmas and current projects that need completion first. posted: 26 Dec 2018 02:34 from: Martin Wynne Getting a bit closer. The central rib on the inner jaw is now distinct, and there is now no flashing between the screw heads. I also modified the outer jaw and key to better match the underscale Peco pretend-bullhead section, and made it a closer fit in the chair (7mm scale/ 0 gauge): 2_252112_540000000.jpg 2_252113_110000000.jpg 2_252113_340000000.jpg In theory you make one change at a time. So I made four. 1. retraction increased from 0.25mm to 1mm. 2. Z-hopping over perimeters switched on, and set at 0.2mm lift (for 0.05mm layers). 3. infill overlap on perimeters reduced from 15% to 5%. 4. printing order changed to print infill before the perimeter around it. I don't know which of these was the more important, but I suspect 4. was the most significant in improving the definition. ...