Printer head rises when start printing

When I set printer up for the correct height then home all axis then press print it raises to .35 and then start to print which is to high where do I find the settings to drop it down before printing can any one help me there.
Geoff

This is based on your first layer settings and the physical distance between the nozzle and the bed. (assuming 0.1 for the bed)

So, 0.35 + 0.1 = 0.45 for the first layer.

This is the reason you can adjust your first layer thickness in the Slic3r. The first layer setting is not the same as the real layer thickness.

By default, Slic3r has 200% extrusion for the first layer, so it will be twice the nozzle diameter.
This is usually OK, but you can adjust the value to make it perfect. I have 150% to prevent over extrusion, but your mileage may vary.

Edited 2 time(s). Last edit at 08/01/2016 08:59AM by Veesta.