scallop finish from planer

[RogerS]

My CT150 seems to be having a hissy fit and anything I plane looks scalloped. Any clues ? Blade height gone out of whack?

Many thanks

Roger

 

[JonnyD]

Sounds like the blades are not set level to each other. Other posibility is blunt blades.

jon

 

[Digit]

Have you just changed knives Rog?

Roy.

 

[RogerS]

Have you just changed knives Rog?

Roy.

No I haven't.

What's the easiest way to decide if the blades are blunt? I tried a quick wood-drag test and they seemed to be about the same height but it was a quick looksie.

 

[Digit]

Any possibility that a knife has moved at all? If the problem occurred suddenly it's a possibility, unlikely but not impossible.

Roy.

 

[9fingers]

Any clues here Roger?

https://www.ukworkshop.co.uk/forums/view ... hp?t=32292

Came up a week or so ago.

Bob

 

[RogerS]

Thanks for the suggestions, guys. Reading around it may be too fast a feed rate so that's an easy thing to check/fix.

 

[wizer]

call it a feature

 

[OPJ]

What's the easiest way to decide if the blades are blunt?

Well, without running your finger across them :shock:, you can usually tell be the quality of the finish through the thicknesser (as someone already suggested) or by the sound. If it's making a lot of noise then, the knives are getting dull. This isn't always easy to notice until you've fitted a freshly sharpened set though... :roll: I also look for the finish - try planing a piece of hardwood with a little bit of figuring (something llike sycamore or cherry is good) and offer it up to the light. If it catches the light nicely then, there's still something left on the edges.

 

[Steve Maskery]

Santa brought me one of those little microscope thingies, a fiver from Maplins. It's great for inspecting edges, I love it.
S