Prusa i3 Nozzel height

Recommendation for nozzle height above print bed please?
I have been testing with 0.1 to 0.15mm but was wondering if there's an optimum.
many thanks imk

Machine is Prusa i3 0.4mm nozzle 1.7mm filament

use a 0.1mm feeler gauge or a 0.004" gauge. It's stiffer and easier to use than a sheet of paper. Then set first layer height to 0.3 and extrusion % to 150% and you will be good to go for PLA. Don't know about ABS because PLA suits my needs without all the hassle of ABS.

Quote
tjnamtiw
use a 0.1mm feeler gauge or a 0.004" gauge. It's stiffer and easier to use than a sheet of paper. Then set first layer height to 0.3 and extrusion % to 150% and you will be good to go for PLA. Don't know about ABS because PLA suits my needs without all the hassle of ABS.

Hello tjnamtiw
I have been using 0.1mm and for months have been getting good results.
Then last couple of jobs just kept going wrong. Mmmmm me thinks set up machine again, did this and again very variable result.
But just this minute found the problem, rail/rod on the Y axis are bent, so the bed moves 0.5mm or more up/down during the print.
So going to have to get some more 8x400 bar, any recommendation in UK please.
Local firm wants £75 for 3m and I only need the two times 8x400
imk