Flex 40 mold release

Flat32
Guest

Flex 40 mold release Feb 5, 2018 5:05:18 GMT -5

Quote

Post by Flat32 on Feb 5, 2018 5:05:18 GMT -5

I'm trying to make model car tires Flex 40 with black color dye as the cast material. Mold is 3D printed acrylic resin (Formlabs).

PDF instructions mention using baby powder on the mold, but mold release Stoner is also mentioned. Do I use both or just one? If both then what would be the application procedure?

The mold does have small details in the tire tread and the tires are about one and a quarter inch diameter.

I would guess the Stoner would be applied first, but don't know if the powder can be applied over it.

carol - Alumilite Corp
Global Moderator

Posts: 411

Flex 40 mold release Feb 11, 2018 18:27:27 GMT -5

Quote

Post by carol - Alumilite Corp on Feb 11, 2018 18:27:27 GMT -5

Flat32,

Powder can be used if the Mold is silicone, it would not work well for an acrylic resin mold. You would need the Stoner and you would need to make sure that stoner gets down in to the small details or it may bond. Silicone molds work best for tire molds as opposed to a rigid mold as you can flex it to release the resin easier. It is not as imperative that you get the release down in the tiny detailed recesses of the mold... as silicone only bonds to another silicone, urethane's bond to everything but silicone.

Warmest Regards,

Carol

Ray Guest	Flex 40 mold release Feb 12, 2018 13:59:15 GMT -5 Quote Select Post Deselect Post Link to Post Back to Top Post by Ray on Feb 12, 2018 13:59:15 GMT -5 Thanks for the response. Silicone mold is not feasible, but perhaps I should be looking at making the tire in silicone instead of urethane. Do you have a silicone product that would be similar hardness and black. Thanks, Ray

carol - Alumilite Corp
Global Moderator

Posts: 411

Flex 40 mold release Feb 19, 2018 21:26:28 GMT -5

Quote

Post by carol - Alumilite Corp on Feb 19, 2018 21:26:28 GMT -5

Ray,

We have the HS1 Silicone that is about a 40A durometer that could be used as a tire for model. We don't readily yet sell dye for silicone. If you would like to call me I can check on getting a silicone dye for you to use and then yes that would/should work just fine.

Regards,

Carol

800-447-9344

Forum

Flex 40 mold release

Post by Flat32 on Feb 5, 2018 5:05:18 GMT -5

Post by carol - Alumilite Corp on Feb 11, 2018 18:27:27 GMT -5

Post by Ray on Feb 12, 2018 13:59:15 GMT -5

Post by carol - Alumilite Corp on Feb 19, 2018 21:26:28 GMT -5

Quick Reply