# OT: Viper SLA support material

**URL:** <https://forum.formlabs.com/t/ot-viper-sla-support-material/6319>\
**Category:** General Discussion\
**Created:** [September 14, 2015, 7:07pm UTC](https://forum.formlabs.com/t/ot-viper-sla-support-material/6319 "2015-09-14T19:07:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Declan\_Halpin](https://avatars.discourse-cdn.com/v4/letter/d/74df32/32.png) [@Declan\_Halpin](https://forum.formlabs.com/u/Declan_Halpin)\
**Post date:** [September 14, 2015, 7:07pm UTC](https://forum.formlabs.com/t/ot-viper-sla-support-material/6319/1 "2015-09-14T19:07:06Z")

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Hi all,

I have used service bureaus that print with the Viper machine. The prints come in with no visible support marks, so I’m wondering if they somehow have a soluble support system. Anyone have any insight?

tx,

dh

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**Author:** ![Andrew\_Miller](https://avatars.discourse-cdn.com/v4/letter/a/f4b2a3/32.png) [@Andrew\_Miller](https://forum.formlabs.com/u/Andrew_Miller)\
**Post date:** [September 15, 2015, 10:29am UTC](https://forum.formlabs.com/t/ot-viper-sla-support-material/6319/2 "2015-09-15T10:29:21Z")

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Viper machines are conventional SLA, i.e. top down, the laser draws on the top surface of a large tank of resin. This means there is no peel process. There are supports, but they are thin hair like structures that leave very little marks because they do not need to oppose the peeling force…

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**Author:** ![MaximLobovsky](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/maximlobovsky/32/19620_2.png) [@MaximLobovsky](https://forum.formlabs.com/u/MaximLobovsky)\
**Post date:** [September 16, 2015, 2:11am UTC](https://forum.formlabs.com/t/ot-viper-sla-support-material/6319/3 "2015-09-16T02:11:14Z")

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Also, typically a service bureau will do a bit of finishing for you. Look for light sanding marks where the supports should have been.

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**Author:** ![system](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/5/b/5bc2bdf993ff27c2e0eecab5010b25626fbb327a.png) [@system](https://forum.formlabs.com/u/system)\
**Post date:** [September 30, 2015, 2:11am UTC](https://forum.formlabs.com/t/ot-viper-sla-support-material/6319/4 "2015-09-30T02:11:28Z")

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Closed on September 30, 2015, 2:11am UTC

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