Core Shaping

skidesmond · Post by **skidesmond** » Wed Mar 14, 2012 3:17 pm

Vinman - Sounds right. I use a similar formula to figure out my total core width.

Richuk · Post by **Richuk** » Wed Mar 14, 2012 4:05 pm

That's quite a lot of flash, but it depends on the wood you are using for the core. Do you put your core through a heat cycle before it is used?

vinman · Post by **vinman** » Wed Mar 14, 2012 4:16 pm

Yeah 3 mm each side is a lot I guess but I'm still learning and sort of need this margin right now until I'm better .

I do not heat treat my cores. I have been thinking about it though. What is your thinking here. Drying and shrinking the core?

Richuk · Post by **Richuk** » Thu Mar 15, 2012 3:30 am

It's damp during the winter, so I can't rely on the published moisture content.

Dimensional stability is important and although water doesn't boil at 80 degrees C, it does start to steam.

vinman · Post by **vinman** » Thu Mar 15, 2012 3:39 am

Would putting a dehumidifier in my shop for a bit help prior to core building?

Richuk · Post by **Richuk** » Thu Mar 15, 2012 4:23 am

No, it not a replacement for the huge ovens used in the industrial process.

Bringing the core in for a few day will have an effect provided you process and press the same day, it all a bit finger in the wind though. It will reduce some of the surface moisture, but you won't receive the full benefit.

It's easier to put the core through a heat cycle and then process. Try it once with a few before and after measurements and it will start to make sense. Especially if you are anywhere near the press when the cycle ends.

vinman · Post by **vinman** » Thu Mar 15, 2012 7:39 am

My wood is kept in the shop off the floor. It is pretty dry but there are
Obviously changes in humidity in the environment. Maybe I'll pick up a humidity tool.

Richuk · Post by **Richuk** » Mon Mar 19, 2012 4:41 am

A moisture meter would be cheaper.

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Core Shaping