====== Projet CJP 660 ======

{{: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.

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===== 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