Sorry I couldn't answer before, power just came back after a 6 hour outage.
Quote:
Originally Posted by nekokami
Definitely go with Yvan's advice. He's a pro. I'm just a DIY hack. 
Is this related to a project you and I were discussing at one point? Because I was thinking of using something like balsa to send you a model.
Excellent!!!  |
No, no it's not related, the size of the project wouldn'thave been that bothersome. As some of you might remember, I took a sub job to build molds for a construction company pre-manufacturing concrete high end houses. I'm carving the plugs for moldmaking. A plug is essentially a mockup of the finished product. I'm now carving in foam, for different reasons, a front overhead carving (the architectural term eludes me for now) of huge proportions. 1 1/2 meters by 4 meters long with an arch on top. That is the biggest carving I've ever done.
Speaking of which I have to get back to it.
Quote:
Originally Posted by nekokami
So, can someone who knows tell me what's wrong with silicone on windows? Is it because of the wood mouldings?
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Okay.
Silicone will not adhere correctly to a place where there was mastic. After a few years outside it will accumulate grunge and become slime dark and it will shrink and harden and start peeling. Latex would be a better choice but will also accumulate grunge. Next, if in the few years after applying it a window breaks and you have to replace it, good luck and patience at removing the stuff. Mastic in this respect is much easyer to work with. It hardens and can be removed by chunks without damaging the wood around, paints well and can last for 50 years without having to replace it. Provided it's well cared for. For windows made of sythetic material, silicone and latex are perfect. For wood windows, stick with a proven technique, unless a new miracle product comes along. Silicone ain't it.