Add 3d_Printing/main.md

add Polysmoothing process log and starting settings

3d_Printing/main.md

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+# What Matereial do I use ? 
+I use 3mm whithe ABS 3d Printing marerial  from mateial 4 print. 
+
+# Print Settings:
+I used mutch infill  like 40% and retraction diffrent as recommended. 
+would see how it performes. 
+
+## Official  Recommandations: 
+Retraction: Off
+Speeds: 45/50
+Extruder Temp: 230c
+Infill 10%
+Raft+Support: Off
+No Heated Bed
+
+# Printer: 
+I used a  Ultimaker 2+  to print my parts with glass bad and heeted enclosure.
+Thanks to Atrakktor ev hamburg where I borrow it from. 
+
+# Poolysmoothing: 
+I  used ABS for the idea of Polysmoothing it using Acetone: 
+
+1.  Step
+I  sanded my prints to get a nicer finish and a plain surface to sit tham on. 
+2.  Step
+In regard to the massive Printsettings I used a wire to dip  the prints directly into  the acetone.
+It gos mutch faster and the prints got shiny too. 
+
+Probably i can uns Acetone as a kind of glue to stik  multibale prints together. 
+
+3.  Step 
+Let the prints Dry. 
+