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Tips for creating spalted maple       Creating spalted lumber by creating the correct conditions. January 4, 2001

Question
Is there a way of making spalted hard maple? I have a log with big hunters spikes in it (never had any luck getting them out) and it is probably well stained by now. If I could get it to spalt, I could chainsaw it into chunks for wood turners.

Forum Responses
Find a cool shaded spot and let it sit on the ground. Cover it with sawdust and keep it moist (not too wet). I can't tell you how long it will take. It will only spalt at temperatures from 60-90 degrees. It’s tricky to catch it just right before it rots. I haven't tried to do it on purpose, but get a lot by accident. Check it after about 3 months.



A wood turner I know leaves chunks of maple strewn around his yard in order to get them to spalt. He checks them every so often, and when the spalting reaches a stage he likes, he turns the piece and applies the finish.

I found some nice spalted maple at a friend's house, grabbed a few chunks, and 2 months later I went back to get some more--all of the remaining log had rotted. There is a very fine line between great spalting and rotten wood.



The previous comments are indeed very accurate. Spalting is the result of activity by the white rot fungi. (Shitakii is one white rot fungus, so think twice about how delicious these mushrooms are on your next piece of steak!) You want the fungi to begin their activity, but not get too far advanced. We can stop their activity by drying the wood or by heating it above 130 F. We can encourage their activity by keeping the wood warm and fairly wet (but not too wet).

Gene Wengert, forum technical advisor


Have you reviewed the related Knowledge Base areas below?
  • KnowledgeBase: Finishing

  • KnowledgeBase: Lumber and Plywood

  • KnowledgeBase: Primary Processing: General

  • KnowledgeBase: Primary Processing

  • KnowledgeBase: Primary Processing: Air Drying Lumber

  • KnowledgeBase: Wood Engineering: Wood Properties

  • KnowledgeBase: Woodworking Miscellaneous: Woodworking

  • KnowledgeBase: Knowledge Base




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