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marcnaz
marcnaz's picture
Evenly space lines, bumps across cut?

I'm brand new to this and just got my mill assembled and a new blade installed and made my first cut on my new mill! Yehaw.. cuts like butter but...

There are lines evenly space across the surface aboout 1/2 in or so apart. They are obviously made by the blade, but was causes this and what can help me get a smoother cut? I had a couple of recently cut small Aspen logs to practice with for my first cuts. Wood is fairly green. I tried going slower, and faster. Slower helps a little but not much. Tried increasing the blade tension a bit but didn't seem to make much difference. Afraid to over tension the blade. Seems less on the  of the top of the cut (underside of the cut off piece) is a little better, but top surface of cant it's very promenant. Evenly spaced "line" or bump about a 1/32 or so wide very 1/2 in or so horizontally across down the length of the board. Almost like the tooth set is raised on a section of the blade causing it? New Sabertooth blade.. maybe I'm expecting too smooth a cut, but this would reqire a planer, not just a sander to clean up. Am I expecting too smooth a cut?  Any suggestions

r.garrison1
r.garrison1's picture

I'm pretty sure one of your teeth on the blade is dinged up; sticking up higher than the rest.

 

Take a bit of wood, about a 6" 2X4 or so, and make a cut in it about the width of your saw blade; about an inch deep or so.. You can make it easily with a skil saw or something, if you have a narrow kerf blade for it.

Then, slide that board with the cut down your blade, until one tooth catches. That's the high one.

marcnaz
marcnaz's picture

Ahhh, that makes sense. Thanks and I appreciate the info on the way to check it,

eddiemac
eddiemac's picture

My suggestion is to buy a planer. Don't expect lumber from a sawmill or even a vertical bandsaw to be sander-ready. That said, some bands cut smoother than others.

r.garrison1
r.garrison1's picture

I agree with Eddiemac. I have a 12 1/2" planer, and wish I could validate a good reason for one of those drum sanders that are open on one side (so you can sand to thickness wider boards).

I've toyed with the idea of making a bigger wide belt sander, but I lack good shop space for it. I've used one in a furniture shop in the past that has a table in the middle that holds the material (dining tables, in that shop), and had two 16" diameter wheels at the ends (about 15' from each other). A wide sanding belt (about 16" wide, as I recall) ran between the wheels, with a little tension on the belt. One of the wheels was the drive wheel, the other had some spring tension on it.

The material being sanded went on the table, and you could use a platten (hand held or attached to a hing off to the side) to push the belt down on the material. That one was set up for dining tables, but with that setup, you could move almost anything under the belt for sanding.

If the wheels were 15' from each other, the belt must have been about a 32' long sanding belt... probably not cheap. I'm cheap. I need to find a 'Red Green' way to get it done, I guess.

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