Re: Jointer finish problem


Rob (in snipped-for-privacy@g44g2000cwa.googlegroups.com) said:
| [resend - first two have not gone through after 18 hours]
That's the way it should be - this is a text-only newsgroup.
| I'm pushing the lumber through at around 2" per second (the 6" | sample took about 3 seconds). The raised areas might not be enough | to cause gluing difficulties (face gluing for a work bench), but I | know this isn't right...
You're right, it's not. If you jointed knots, they might be the cause - else it could be sand/grit trapped in the wood or hiding on the surface.
I'd be inclined to check the bevel on the knives - and to perhaps add a secondary bevel to have just a bit more "meat" at the cutting edge. Even HSS will chip and break if the edge is too thin.
| | One guy at work thought the ends of the board might be dirty | (literally, dirt), and nicking the knives (I have not trimmed the | length yet). Another had no idea what might be causing the problem, | but said it wouldn't of been dirty lumber, especially from where I | got it from.
A really good source isn't a guarantee that the wood'll still be clean when you get it back to your shop - it's possible to pick up sand and grit from a truck bed, too...
-- Morris Dovey DeSoto Solar DeSoto, Iowa USA http://www.iedu.com/DeSoto/solar.html
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Morris Dovey wrote:

My bad. I lurked for a bit and saw quite a few images going through, and thought I'd be ok.

A couple of knots, but it's FAS lumber, so not too many knots. And, I saved the knotty board for last.

I'll check with the sharp shop to see if they can do this. I tried sharpening the last set of knives on a water stone, but they were bowed slightly, so I stopped quickly, and picked up the new set.

Good point. I did load the lumber on stands in my bed, so it wasn't laying on the bed itself, but that might only mean strips of gunk. I was mindful of that issue. And it's standing up in my (clean) garage.
Thanks for the thoughts, Rob
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Rob (in snipped-for-privacy@g47g2000cwa.googlegroups.com) said:
| Morris Dovey wrote: || || That's the way it should be - this is a text-only newsgroup. | | My bad. I lurked for a bit and saw quite a few images going | through, and thought I'd be ok.
/My/ bad - I should have mentioned that woodworking-related binaries can be posted to news:alt.binaries.pictures.woodworking. -- Morris Dovey DeSoto Solar DeSoto, Iowa USA http://www.iedu.com/DeSoto/solar.html
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Rob wrote:

The sharp shop put a microbevel on the blades. Then I cut myself putting them on :-(

I cut of the ends (1/8") of each board. Ran another 60 bf through, and the first board is as good as the last.
Thanks for your advise. I suspect is was the secondary bevel that did the trick.
Cheers, Rob
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Rob (in snipped-for-privacy@g43g2000cwa.googlegroups.com) said:
| The sharp shop put a microbevel on the blades. Then I cut myself | putting them on :-(
Not a thing I can say that you haven't already said to yourself. I keep a tube of Neosporin and a handful of band-aids in my shop for those occasions when I've forgotten what sharp is all about.
| I cut of the ends (1/8") of each board. Ran another 60 bf through, | and the first board is as good as the last.
Isn't it great when things work like they're supposed to? :-)
| Thanks for your advise. I suspect is was the secondary bevel that | did the trick.
You're welcome. Actually I was just passing on something I learned about here on the wreck. My guess is that the initial sharpening left a slightly too fine edge - and adding a secondary bevel (to a just ground edge) was a strategy for recovery with minimal loss of HSS.
Please post pix of your bench to news:alt.binaries.pictures.woodworking when it's done!
-- Morris Dovey DeSoto Solar DeSoto, Iowa USA http://www.iedu.com/DeSoto/solar.html
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On 18 Dec 2005 19:09:32 -0800, with neither quill nor qualm, "Rob"

Get these and wear them before you replace them the next time, Rob.
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber173 kevlar, or the sticky-coated (kevlar or spectra) glass-handling gloves. (HF no longer carries the type I got. Golden kevlar with a drizzle of clear rubber on the palm and fingers side.)

You are advised to write "advice" the next time you thank him.
--
Don't forget the 7 P's:
Proper Prior Planning Prevents Piss-Poor Performance
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