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Lab talk, the good, the bad, and the ugly
Metal
Milled Bridges Rocking Again
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<blockquote data-quote="JMN" data-source="post: 219902" data-attributes="member: 8469"><p>Don't know how your waxers are spruing, but what I saw caused a lot of bridge issues is how much/how far the wax had to be built to reach the copings.</p><p></p><p>If you have a high variance on height, even it out and let it cool before adding onto the bar. You should only and barely "glue" the bridge to the bar, if you are adding 2mm of wax to reach one and the other is already attached the cooling wax will contract and warp your bridge that used to fit perfectly before casting.</p></blockquote><p></p>
[QUOTE="JMN, post: 219902, member: 8469"] Don't know how your waxers are spruing, but what I saw caused a lot of bridge issues is how much/how far the wax had to be built to reach the copings. If you have a high variance on height, even it out and let it cool before adding onto the bar. You should only and barely "glue" the bridge to the bar, if you are adding 2mm of wax to reach one and the other is already attached the cooling wax will contract and warp your bridge that used to fit perfectly before casting. [/QUOTE]
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Lab talk, the good, the bad, and the ugly
Metal
Milled Bridges Rocking Again
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