Masterbatch Ratios for the Filastruder

I’ve been mixing up different colors and running them through the Filastruder. I’ve kept the Filastruder going 100% of the time. I’m trying to do them in an order so that the colors are similar and that one batch can quickly transition to the next. Here is what I’ve done so far.

Lemon/Lime (1:64 master batch ratio) – The color came out very close to a nice lemon lime color. The color varied back and forth between green and yellow as it would hit one of the master batch granules.

  • 2 cups ABS Natural from OSPrinting
  • 1.25 tsp yellow master batch
  • 0.25 tsp blue master batch

Yellow (1:32 master batch ratio) – I wanted a color that could be used to print a Pikachu for my daughter. For a true Pikachu yellow, I probably should have added a tiny bit of red to it. The yellow came out nice although I’d like it to be a little darker and richer.

  • 2 cups ABS Natural from OSPrinting
  • 3 tsp yellow master batch

Orange ( 1:32 master batch ratio) – The orange came out almost like a traffic cone orange. And again, like the lemon/lime, the color varied between yellowish to reddish as it would hit a yellow or red granule.

  • 2 cups ABS Natural from OSPrinting
  • 1 tsp red master batch
  • 2 tsp yellow master batch

Red (1:64 master batch ratio) – I really wanted a fire engine red but this didn’t come close. It was a little light and pinkish. I think the problem is that I doubled the amount of ABS Natural when I was mixing it but forgot to double the master batch too.

  • 4 cups ABS Natural from OSPrinting
  • 3 tsp red master batch

Purple (1:32 master batch ratio) – I wanted a grape color but this came out too blue and too dark. The color was much more consistent than the others even though it was a mixture of two different master batch colors. I think that was because the blue color is a lot more dense and dominates the mixture. Next time, I’ll try more red and less blue.

  • 2 cups ABS Natural from OSPrinting
  • 1.5 tsp red master batch
  • 1.5 tsp blue master batch

Blue (1:32 master batch ratio) – The blue came out very nice. It was a bright almost electric blue. It has a variation to the blue that reminds me of the ocean.

  • 2 cups ABS Natural from OSPrinting
  • 3 tsp blue master batch

Green (1:32 master batch ratio) – This was the last of my ABS pellets from OSPrinting so I only made a cup worth. The green came out mostly dark with some variation from yellowish to forest green.

  • 1 cup ABS Natural from OSPrinting
  • 0.5 tsp blue master batch
  • 1 tsp yellow master match

Red (1:32 master batch ratio) – I was again trying for a fire engine red so this time I made sure that I made it at a 1:32 master batch ratio. I was also out of ABS from OSPrinting and used from pellets that I bought off eBay from carlsievering.  This was the first time I’ve used the pellets and I don’t know much about them but they are white-ish and not natural color so I guess that means they have white pigment already added to them. I think we know what happens when you mix white and red.  What came out of the Filastruder was much more pink than the previous batch of red. It’s a kind-of chewed bubble gum color. I didn’t time it but I think the Filastruder was also at least a third as fast in extruding them. Its been churning on the 2 cups of pellets for about 26 hours and it probably has several hours left to go. The filament is very flexible and I can bend it in much sharper angles than the OSPrinting filament which seems much more brittle . I wonder how well it’s going to print?

  • 2 cups ABS Natural from carlsievering
  • 3 tsp red master batch (from OSPrinting)

The colors that ended up with a variation to them were nice but if you are wanting solid colors, then these master batch granules are not quite the right size. They probably need to be at least a quarter of their size in order to disperse the color more evenly.

Update: I made another batch of red but this time I used a 1:24 ratio (2 cups of OSPrinting ABS pellets and 4 tsp red master batch).  The red came out almost perfect although I think it could be a little bit more intense. 

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Posted in Filastruder
3 comments on “Masterbatch Ratios for the Filastruder
  1. Burnham says:

    Reblogged this on Open Source Printing LLC and commented:
    Great work by David Smith using our plastic and colorant.

  2. spaceagerobotics says:

    Are the master batch granules such that they could somehow be cut or chopped into smaller pieces, for better dispersal?

    • David Smith says:

      Yes, I think they could probably be chopped up into smaller pieces and it’d work better but I haven’t tried yet. Maybe using a coffee or spice grinder. You’d probably want to use one you could dedicate just to grinding plastics.

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