Casting again

[paulm]

In another thread I was asked if it was possible to cast without pressure or ultrasonics so I had a go and this is the result. I thought I might have had one or two small bubbles but certainly wasn't expecting the amount that I got. Pressure for me from now on.

3 blanks for the bin

 

[donwatson]

That looks a bit of a disaster Paul. Will the pressure cure that

 

[bassethound]

Oops! oh well better luck next time Paul..

 

[rayf6604]

Were the bubbles there when you poured the resin into the moulds or did they form after you poured?

 

[rayf6604]

And during the curing period?

 

[paulm]

That looks a bit of a disaster Paul. Will the pressure cure that

There wouldn't have been any bubbles at all if I'd put it in the pressure pot Don.

 

[paulm]

The formed after the pour Ray. Initially it didn't look like there were any bubbles at all, I don't know where they came from.

 

[wm460]

Did you warm the resin before you pored?
I never you pressure for cast like that and don't get bubble like that.

 

[rayf6604]

The formed after the pour Ray. Initially it didn't look like there were any bubbles at all, I don't know where they came from.

That's a bit concerning Paul must say, but I haven't properly read the instructions on the resin so I'll see if it says anything about temperature of the resin etc. It's more critical with polyester resin I think so the same could be true of polyurethane.

 

[Jim]

I have made many a casting using Water Clear Resin without the pressure pot Paul, i have never had this, tiny ones yes .. Surprised me this my friend ..

 

[Penpal]

Paul dissapointing mate have a yarn with Les in Canada I do believe he does not use vibration his castings are immaculate I believe his preparation thermo controlled bucket he designed and uses an important part of his success bearing in mind he faces the minus degrees where he lives that would prohibit casting for most of us.I have circulated his bucket method from the IAP Library also shown on other forums Les is a great guy tell him I said so we are old mates now.

Peter.