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Poly-Fiber Poly-Tone / Aerothane/ Enamel Flattener

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To flatten 1 Quart, Use 1 Pint
To flatten 1 Gallon, Use 1 Qt. & 1 Pint
Used to make Aerothane & Enamel match the semi gloss finish of Polytone, or to make either Aerothane, Polytone and Enamel Full Military Flat.
Note: Aerothane requires catalyst and the system will add the required amount automatically. If you currently have an adequate supply please indicate it in the Special Instructions box before your final checkout, and we will remove the catalyst from your order.

Important Notice: All mixed paints are special order and are non-returnable.
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Just what I needed for the painting I was doing

Mike L Verified Purchase


September 8, 2022


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Does the flattener come with extra catalyst for aerothane or do I need to order extra?

The flattener does not come with catalyst. You will need to purchase more catalyst if required. Aerothane top coat normally will come with the required catalyst on the order.

Q: Can this be used to flatten the epoxy primer?

The epoxy primer should already be flat. This is only approved for use with enamel, ranthane, and aero-thane.

Q: Is this flattener used in addition to, or in lieu of, thinner when mixing with Poly-Fiber enamel for spraying?

It is used in addition to the recommended thinner for the top coat being used.

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