Onyx Prime "Beast Face" Matrix Plate

A replacement Matrix-kit for Transformers: Power of the Primes Prime Master figures or Titans Return Titan Master figures. These kits allow for customization of the face while keeping the moving parts and head/body connection from the mass-produced figure for the best fit between head and body.
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This matrix plate is inspired by the Predacons' Onyx Primal Matrix, reimagined to double as a face for Titan Master figures.
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This face is available in a set, consisting of  Amalgamous Prime, Nexus Prime, 13th Prime, and Onyx Prime, to check it out, click here.
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This replacement faceplate connector has been tested using Titan Wars Skullsmasher and Blurr, and should be compatible with most Titan Master mini-figures. As prints vary, some sanding/trimming may be required, and some Titan Masters (like Blurr) lack the rectangular connection peg and gluing may be required to fully secure the face. 
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Some fine details may not show up clearly on prints in strong & flexible plastic.
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Instructions: 
Use a toothpick or pin to remove any support material inside the connector ports on the back of the face. 

Paint and seal as desired. Detail plastic prints will need a light washing with soap and water prior to painting to remove support material residue. 

Unscrew the screw in the Titan Master's chest. Remove the original face-plate. Place the new face plate on the figure, replace the screw. 

The port does not come pre-threaded, so the initial installation will be tight. If the screw connection is too loose you can secure it with a drop of superglue inside the port prior to reinstalling the screw.