A quick note to let everyone know what's going on.
This is a project that is of interest to me, but is usually worked on in the evening as time and other projects permit. Things are progressing and there appears to be enough interest to keep moving forward.
I've added a number of wood types - the list has grown to about 1500!
On the downside, this project was started to help with the planer upgrade project and calibration. I've progressed far enough to know that hardness alone is not a determining factor, which isn't really a surprise. The key variables seem to be hardness (to some extent), density, moisture (which is a factor that I've got to ignore and assume the best dryness for cutting), and graininess. So more work needs to be done. In the end I will likely include (keep) the Janka hardness scale, add a column for a density scale, and another for the "cutability."
Will keep you posted and include a draft now and then. Any ideas would be appreciated.
Mark
Wood Hardness Chart Update
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JPG
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RPM and 'letter' would be 'nice'!:)ryanbp01 wrote:I'd like to suggest a column for speed a pro Planer needs to run.
BPR
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
╟JPG ╢
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
Not quite that easy!
I was hoping to get close to something like a speed setting recommendation.
Just remember that Shopsmith and others have recommendations based on SQFM - square feet per minute. A simple setting for each wood is not possible since a piece of Hickory 2" wide is going to run through differently than an 8" piece would. That's why they all use SQFM. That and each piece of wood is different - different number of knots and different grain.
So I hope to get to a setting based on SQFM for each wood - but that remains to be validated.
Just remember that Shopsmith and others have recommendations based on SQFM - square feet per minute. A simple setting for each wood is not possible since a piece of Hickory 2" wide is going to run through differently than an 8" piece would. That's why they all use SQFM. That and each piece of wood is different - different number of knots and different grain.
So I hope to get to a setting based on SQFM for each wood - but that remains to be validated.