Printing

#1 Printing fine except in 2 or 3 places it's as if it skipped layers...

#2 The bottom half was so/so and then the top half went to hell in a hand basket. The Balls on the inside where the same way bottom ½ ok top ½ really bad,

#3 Same Picture (2) looking at the side of it bottom so,so top ???????

#4 Came out perfect..

#5 spool spacer came out perfect.

All the prints are ABS, bed temp 99 to 100 C, nozzle temp 235 C. So what is going own why good prints and then bad prints and yet nothing changes other than the color. ???? what am I doing wrong? It seams like the harder I try the behind-er I get. Does anyone have any ideas that may help.

Printer is a: RepRap Prusa i3 Mendel 9 months old. 270 x 200 x 180mm

Power supply 650 watt 12 VDC dual Rail computer power suppy

Bed power 18Amp
Nozzle 16Amp

Thank you for any and all help.

Edited 1 time(s). Last edit at 06/02/2016 03:32PM by yar60.

Some colors need a higher temperature.

Thank you, does it matter if your printer is open in the front? I see that some Printers are closed all around, I have to back closed but the front half is still open. again thank Ill try increasing the temp.