Resin Release Spray

[mallard]

Hi,
When casting in a silicon mould, plastic pot or a specific mould shape do I always need to use Resin Release Spray ? If so does anyone have any recommendations. Does the spray react with the resin and effect the finish ?

 

[Sawes]

While our silicone moulds have excellent release properties with all types of resin we do advise the use of spray.
Also when using the SoliMould HDPE mould we strongly recommend as it does not flex to be able to remove the parts.

We do stock a release spray on our website Silicone Release Spray – MrResin



Sent from my SM-G925F using Tapatalk

 

[Bucks]

Although mould release is not required with silicone moulds, I would always recommend using a wax or silicone based mould release, as it can greatly extend the life of the mould. It doesn’t just help with removing the cast from the the mould it actually helps to protect the mould from being degraded from the harsh resins that are cast in them. We are finding that a wax based mould release such as Macwax works a lot better on silicone moulds than a silicone based mould release, but unfortunately the wax based are at least double the price of the silicone mould releases.

With hdpe and other plastic moulds/containers that are thin enough to be flexed or can be dismantled generally no mould release is required but with solid moulds that can’t be flexed or dismantled a mould release is essential otherwise you may not be able to remove the cast. The silicone based mould release is perfectly adequate for this.

Neither the wax or silicone releases effect the resin as they are specifically designed to be used with resin, but they both leave a fine coating on the cast blanks which will get turned away on pen blanks anyway.

Hope this info helps

 

[21William]

I used to use Macsil, it was about the only stuff available at the time, at least from the suppliers I used. A little goes a very long way. I still have a part used can somewhere.

 

[martin.pearson]

We are finding that a wax based mould release such as Macwax works a lot better on silicone moulds than a silicone based mould release, but unfortunately the wax based are at least double the price of the silicone mould releases.

Bucks, is that 100% true? Firstly I don't make pen blanks so have no personal experience but I have worked with moulds & resins & a good mould release wax applied properly should last a while before you need to recoat the mould doing any work with fibreglass or carbon fibre so while the initial cost may be more the cost over time is not as high. Guess it depends on how much work eople are doing lol.
As I say I am not an expert but thought it was worth mentioning lol

 

[Bucks]

We are finding that a wax based mould release such as Macwax works a lot better on silicone moulds than a silicone based mould release, but unfortunately the wax based are at least double the price of the silicone mould releases.

Bucks, is that 100% true? Firstly I don't make pen blanks so have no personal experience but I have worked with moulds & resins & a good mould release wax applied properly should last a while before you need to recoat the mould doing any work with fibreglass or carbon fibre so while the initial cost may be more the cost over time is not as high. Guess it depends on how much work eople are doing lol.
As I say I am not an expert but thought it was worth mentioning lol

Yeah a little does certainly go a long way! so like you say, may work out cheaper than the silicone release in the
long run.

 

[Penpal]

At the price of moulds better to use a release.

Peter.

 

[wm460]

Does mould release go off?

 

[mallard]

Is it just a silicone spray that is labelled as release spray ?
Car interior dash cleaner is silicone as is some lubricating spray. Can that be used the same way ?