Differences

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--- projet_cjp_660:projet_cjp_660 [2020/02/20 07:32] – formlab
+++ projet_cjp_660:projet_cjp_660 [2022/09/30 02:01] (current) – [Pre print checks] formlab
@@ Line 1: / Line 1: @@
 ====== Projet CJP 660 ======
-  * [[projet_cjp_660:Prepare a color model for printing]]
+{{:projet_cjp_660:projet_660.jpg|}}
+===== 3D modelling workflow =====
+  * [[projet_cjp_660:Blender workflow for color printing]]
+Issue with lines on texture in 3D Print (not visible in Blender): https://support.capturingreality.com/hc/en-us/community/posts/115001620231-Big-seams-of-the-texture-when-printing-model-on-ProJet-660-Pro
+- hmm.. texture was 2x2k. Try maybe a UV render with larger spaces between the islands?
+===== Printing process =====
+==== Pre print checks ====
+    * Check power status print-computer. No sleep or screen saver.
+    * Raise build plate (!)
+    * Clean the parking caps.
+    * Clean the service station.
+    * Clean the spreader roller and scrapers.
+    * Clean the fast axis rails and carriage.
+==== Post print steps and cleaning ====
+    * Leave print in build chamber for 2 hours to strengthen the glue.
+    * Vacuum excess core material.
+    * Raise buildplate.
+    * Clean the debris separator grille.
+    * Clean the parking caps.
+    * Clean the service station.
+    * Clean the spreader roller and scrapers.
+    * Clean the fast axis rails and carriage.
+==== Cleaning print ====
+    * Depowder the print
+      * First using the air wand
+      * Then using brushes
+      * Finally using picks for crevices and hard to reach places
+==== Infiltrating the print ====
+    * **Dry the print**
+      * **Oven**: 50°C for about 1 hour (or 40°C for 2-4 hours)
+      * **Room temperature**: The part will also be dry enough at room temperature after about 15 hours (overnight).
+    * **Prepare the workstation**: get all supplies ready
+      * Supplies
+        * Protection gear
+          * Nitrile gloves
+          * Breathing mask
+          * Safety glasses
+          * Clothes & shoes should be covered when infiltrating. CA glue stains will not come off of them.
+        * Paper towel
+        * ColorBond
+        * Nail bed (or freezer paper, or wax paper)
+        * A plastic bin (PP/PE plastic, glass, metal). Get a few different sizes of plastic bins to avoid wasting ColorBond.
+        * A funnel
+        * A downdraft table or fume hood for ventilation
+      * Place a sheet of non-stick material (Te�on, freezer paper or wax paper) on your work area for easy clean-up and to put your parts on as they cure.
+      * Have a good supply of paper towels ready for absorbing excess ColorBond.
+      * The workstation should be well lit.
+    * **Dip**
+        * Dump all colorBond into the bin
+        * Submerge the print in the liquid.
+          * It will start to bubble. This is the remaining air being pushed out by the infiltrant.
+          * Once the bubbels stop coming (or after ±10 seconds), your part is completely infiltrated
+          * If the print is too big to be submerged, drizzle the ColorBond over the part.
+            * "For most parts we douse/pour over the glue. Get two waves of glue over all exterior surfaces in order to saturate it and achieve a uniform finish."
+        * Remove the print
+          *  Keep the part moving in your hands while excess liquid drips back in the container so it does not stick to your gloves.
+        * Dab-off excess ColorBond with a paper towel.
+          * Don't wipe with the paper towel (!)
+          * The print will become warm and may emit visible vapor(!). This is normal.
+      * **Cure**
+        * Put the print on the nail bed (or wax paper) to dry for ±30 minutes. Cure and cool time depends on your part’s geometry, but most parts are safe to touch within 15 minutes.
+      * **Clean**
+        * Using a funnel, pour the leftover ColorBond back into the storage container.
+        * Clean bin well with paper towels. Dried out ColorBond will flake and will contaminate prints the next time it's used.
+        * Soiled paper towels can be safely disposed of as soon as ColorBond has cured. This usually happens within 15-30 minutes.
+        * Cured ColorBond can be removed with nitromethane, a clean-up solvent for instant adhesives.
+      * Post Processing
+        * Sanding
+          * Start with 100-grit paper and continue to 220-grit if a smoother �finish is desired.
+        * Painting
+          * Parts in�ltrated with ColorBond can be painted without additional processing. For the best surface �finish, sand lightly, use a primer, and then apply paint.
+        * Joining
+          * For a plastic-like fi�nish, �fill in the seam of joined parts with Bondo® No.907 Glazing Spot Putty, apply 1-2 coats primer, sand lightly, and paint.
+Storage:
+  * Unopened ColorBond can be stored at ±4°C (in the fridge). Then it's shelf life is 1 year from date of manufacture.
+  * Opened ColorBond should never be stored refrigerated.
+----
+===== How much does it cost? =====
+  ( build material cost ) * material multiplier )
+  +
+  ( machine time (in hours) * machine time cost )
+  * Ink & binder:  ±€0,31 per ml
+  * Plaster powder:  €0,11 per cm3
+  * Colorbond infiltration (optional): €0,32 per gr
+  * Material multiplier: 25% (build material * 1,25)
+  * Machine time cost: €0,55 per hour