Hi, I got my Da Vinci not to long ago and put custom firmware when I first got it.

Now the problem is that when I start my prints in repitier host the bed never meets the nozzle, so I have to pause the print, turn off the motor and manually move up the bed which as you can imagine reduces my print quality, and messes up many prints.

In my EEPROM settings I have the bed set to go to -3 on the Z-Axis but instead what it does is goes to -3 then goes to 0 before the extruder moves.

I would suggest going to the following link and following it word for word. Especially this part here.

Manually adjust z table to be 0 as described here
ON YOUR PRINTER push the "OK" button and select "Quick Setting" and select "Home All". Once the print head "homes" itself, turn off your printer. This is done so you can easily move the print head to the four corners on the build platform. I had to lower the platform with the three bed screws before I could even move the print head on to the print bed. I adjusted all three screws so the extruder nozzle just touches the glass in all four corners of the glass. This should only be done after initially "homing" the print head as mentioned above. This gets the build table at its highest point where you fine tune the nozzle to glass clearance or lack of clearance.
With that done, turn the printer back on and push the "OK" button and select "Quick Setting" and select "Home All". You should now be safe to print with the proper clearance for the nozzle. contributed by chris
The only thing I would do differently in this is to use a piece of paper between the glass and the nozzle as a "feeler" gauge.

Edit eeprom config to be the 0 as it is. To do this,
Home machine. Use fast position menu to bring z to 10 and x and y to nominal positions for you to work with so that nozzel is above the glass working area, 50 50 should be good. take a scrap of paper and place it on the glass bed and lower the z till the paper just begins to grab in the gap. The z height is the negative value to add to the eeprom z position. IE my height was 3.0 I made z home position -3. Power cycle the machine. without homing and move the head around the build are to ensure there are no areas of dragging or excessive gaps.

Hey look I saved you from having to go use the link but here is for reference.

http://voltivo.com/forum/davinci-firmwa … issues#442

I think you might have missed a step in that Z table zero procedure. I am at work right now so I cannot rerun this procedure. The minus three that he states is his zero position. As long as when the print starts meaning the filament is extruding and the head is just a sheet of paper height above the bed then all is good. Don't pay any attention to any numbers on the LCD except temps.

Now the problem is that when I start my prints in repitier host the bed never meets the nozzle, so I have to pause the print, turn off the motor and manually move up the bed which as you can imagine reduces my print quality, and messes up many prints.

In my EEPROM settings I have the bed set to go to -3 on the Z-Axis but instead what it does is goes to -3 then goes to 0 before the extruder moves.