Boat Building Forum

Find advice on all aspects of building your own kayak, canoe or any lightweight boats

Cove tearout observations
By:Ed Valley
Date: 11/1/1999, 5:54 pm
In Response To: Cutting coves (Don Beale)

> cut the coves, the redwood tends to splinter pretty bad.

Hi Don:

I had some pretty bad tearout on some of my strips too. What I noticed is that the tearout happened the worst when two factors were both present:

** -- It only happened on coves, never beads (more wood being removed, I guess)

** -- It only happened when I was moving the strip so that the cutter was biting into the grain. Grrr.. what a crappy description. I mean, hmmmm.. a picture.

Example #1

\\\\\\\\\\\\\\\\\\\\\\

-------> * ---------->

grain in direction of backslashes, cutter (asterisk) rotating counterclockwise, wood moving left to right, this situation was tearout city.

Example #2

//////////////////////

-------> * ---------->

grain in direction of slashes, cutter (asterisk) rotating counterclockwise, wood moving left to right, this situation was beautiful clean cut.

Now, I think when I do this again, if I pick up a strip to be coved, that I will choose the direction I feed it so that even though I am pushing the strip against the direction of the rotation of the cutter (this is a Good Thing), I will choose the orientation of the strip so that at least the cutter is moving with the grain, as in example #2

Does this make sense? I hope so.

Ed Valley

Messages In This Thread

Cutting coves
Don Beale -- 10/30/1999, 1:14 am
Cove tearout observations
Ed Valley -- 11/1/1999, 5:54 pm
Re: climb cut
Don Beale -- 11/2/1999, 12:01 am
Re: Thanks Y'All
Don Beale -- 10/31/1999, 11:46 am
Re: Cutting coves
Earl Bailey -- 10/30/1999, 10:09 pm
Re: Cutting coves
Bill Boyd -- 10/30/1999, 9:52 pm
Re: Cutting coves
Nick Schade - Guillemot Kayaks -- 10/30/1999, 4:22 pm
Re: Cutting coves
Tom Kurth -- 10/30/1999, 9:08 am
Re: Cutting coves
Don Beale -- 10/30/1999, 11:36 am
Re: It's your life
Tom Kurth -- 10/30/1999, 8:39 pm
Re: Cutting coves
Larry C. -- 10/30/1999, 8:07 am
Re: Cutting coves
Rehd -- 10/30/1999, 3:20 am
Re: Cutting coves
Don Beale -- 10/30/1999, 11:29 am
Re: Cutting coves
Rehd -- 10/30/1999, 7:57 pm
Re: Cutting coves
Ian Johnston -- 10/30/1999, 2:22 am