# \#sls **URL:** https://amtpostpro.discourse.group/tag/sls/2.md [Latest](https://amtpostpro.discourse.group/latest.md) · [Categories](https://amtpostpro.discourse.group/categories.md) · [Tags](https://amtpostpro.discourse.group/tags.md) --- ## [Vapor smoothing polypropylene: the FA9202 consumable](https://amtpostpro.discourse.group/t/vapor-smoothing-polypropylene-the-fa9202-consumable/57)
**Author:** [@amtpostpro](https://amtpostpro.discourse.group/u/amtpostpro)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 11:25am UTC](https://amtpostpro.discourse.group/t/vapor-smoothing-polypropylene-the-fa9202-consumable/57 "2026-10-07T11:25:50Z")
Polypropylene does not smooth with the same consumable as the polyamides. As AMT’s product pages put it, “polypropylene is smoothed with a dedicated consumable”. That consumable is FA9202. What AMT publishes for FA9202 … --- ## [Vapor smoothing PA12: what AMT has published](https://amtpostpro.discourse.group/t/vapor-smoothing-pa12-what-amt-has-published/54)
**Author:** [@amtpostpro](https://amtpostpro.discourse.group/u/amtpostpro)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 11:25am UTC](https://amtpostpro.discourse.group/t/vapor-smoothing-pa12-what-amt-has-published/54 "2026-10-07T11:25:49Z")
PA12 is one of the most widely printed powder bed materials. It is listed as compatible on all four PostPro systems (SFX, SF2X, SF50 and SF100), with PostPro Pure and with FA326. Published results on PA12 Material a… --- ## [Dyeing and vapor smoothing: which comes first?](https://amtpostpro.discourse.group/t/dyeing-and-vapor-smoothing-which-comes-first/48)
**Author:** [@amtpostpro](https://amtpostpro.discourse.group/u/amtpostpro)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 11:25am UTC](https://amtpostpro.discourse.group/t/dyeing-and-vapor-smoothing-which-comes-first/48 "2026-10-07T11:25:46Z")
Many smoothed parts are also colored, and the order of operations is one of the most common questions we hear. AMT does not publish a single rule, because the right order depends on the material, the dye process and the … --- ## [Press-fits, snap-fits and assemblies after smoothing](https://amtpostpro.discourse.group/t/press-fits-snap-fits-and-assemblies-after-smoothing/47)
**Author:** [@amtpostpro](https://amtpostpro.discourse.group/u/amtpostpro)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 11:25am UTC](https://amtpostpro.discourse.group/t/press-fits-snap-fits-and-assemblies-after-smoothing/47 "2026-10-07T11:25:46Z")
Smoothed parts often end up in assemblies. Two things change that you can design for: size, a little, and mechanical behavior, often for the better. Size AMT whitepapers measured dimensional change after vapor smoothing… --- ## [Thin walls and lattices: what to check](https://amtpostpro.discourse.group/t/thin-walls-and-lattices-what-to-check/46)
**Author:** [@amtpostpro](https://amtpostpro.discourse.group/u/amtpostpro)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 11:25am UTC](https://amtpostpro.discourse.group/t/thin-walls-and-lattices-what-to-check/46 "2026-10-07T11:25:45Z")
Lattices and thin-walled parts show off vapor smoothing well: lots of surface, often in flexible materials, and hard to finish any other way. AMT’s vapor smoothing page calls out complex geometries with intricate feature… --- ## [Will vapor smoothing change my part's dimensions?](https://amtpostpro.discourse.group/t/will-vapor-smoothing-change-my-parts-dimensions/43)
**Author:** [@amtpostpro](https://amtpostpro.discourse.group/u/amtpostpro)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 11:25am UTC](https://amtpostpro.discourse.group/t/will-vapor-smoothing-change-my-parts-dimensions/43 "2026-10-07T11:25:44Z")
A little, and AMT has measured how much. Two AMT whitepapers report dimensional change after PostPro vapor smoothing: Study Material and process Measured change Vapor smoothing voxeljet’s HSS PA12 (Feb 2024) PA1… --- ## [Before your first cycle: which printer technologies can be vapor smoothed?](https://amtpostpro.discourse.group/t/before-your-first-cycle-which-printer-technologies-can-be-vapor-smoothed/39)
**Author:** [@amtpostpro](https://amtpostpro.discourse.group/u/amtpostpro)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 11:25am UTC](https://amtpostpro.discourse.group/t/before-your-first-cycle-which-printer-technologies-can-be-vapor-smoothed/39 "2026-10-07T11:25:42Z")
Short answer: parts from the common powder bed processes, plus some extrusion-printed and machined plastics. The detail depends on the machine and the consumable. What AMT publishes By machine (product pages): Mach… --- ## [Depowder thoroughly before smoothing, and why it matters](https://amtpostpro.discourse.group/t/depowder-thoroughly-before-smoothing-and-why-it-matters/38)
**Author:** [@amtpostpro](https://amtpostpro.discourse.group/u/amtpostpro)\ **Replies:** 0\ **Last updated:** [October 7, 2026, 11:25am UTC](https://amtpostpro.discourse.group/t/depowder-thoroughly-before-smoothing-and-why-it-matters/38 "2026-10-07T11:25:41Z")
Vapor smoothing works on the surface the vapor can reach. As AMT’s vapor smoothing page puts it, the vapor “condenses on the part’s surface, eliminating peaks and troughs”. Whatever is on that surface when the cycle star…