# Specialty Filament **We also offer some unique materials that do not fall in the above categories.** [**PolyLite™ CosPLA**](https://us.polymaker.com/products/polylite-cospla)**:** This is a special PLA formula designed for cosplay props. It has been enhanced for ease of sanding, durability and paint-ability, but should be just as easy to print as standard PLA. [**PolySmooth™**](https://us.polymaker.com/products/polysmooth)**:** This is a PVB material which is just as easy to print as PLA with similar mechanical properties. What makes this different is that it is soluble in isopropyl alcohol, allowing you to safely smooth layer lines via a hands free process, similar to acetone vapor finishing ABS, but with a much more safe solution. PolySmooth can be post processed by either spraying IPA directly to the print, or even better it can be used with our [Polysher](https://us.polymaker.com/products/polysher). [**PolyCast™**](https://us.polymaker.com/products/polycast)**:** This is a filament designed to produce investment patterns for investment casting applications. 3D printing significantly cuts down both the cost and lead time by eliminating the tooling process. [**PolySupport™**](https://us.polymaker.com/products/polysupport)**:** This is a break away support for Polymaker PLA based filaments. It has a perfect interface with PLA, strong enough to support it and easily removable by hand. [**PolyDissolve S1™**](https://us.polymaker.com/products/polydissolve-s1)**:** This is a PVA based water dissolvable support for PLA, TPU, PVB and Nylon based filaments from our portfolio. It is specifically engineered to have a perfect interface with these materials while also displaying good solubility. It is very hygroscopic meaning it should be dried prior to printing and kept in a filament dryer for the duration of the print. It is suggested to use this material in an IDEX or Tool Changer printer. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://wiki.polymaker.com/polymaker-products/polymaker-filaments/specialty-filament.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.