Checking the jointer for accuracy

[stygn]

@YoWooDDecks In relations to humidity it doesn't matter what you do because you would get a problem anyway. One way of "fixing" it is to have a humidifier that can both increase the humidity when it's too low, and decrease humidity when it's too high. They're not super expensive, and really easy to use. Though with a large workshop you would need a big and expensive one, or several small ones. And it uses electricity of course, so that would add to the electricity bill in the winter..

[ongxizhe]

I didn't know there's this much depth into carpentry. I feel stupid now.

[jkrsecret]

Probably was from the start there.

Great job.

[bytesilver]

@5:10 : 62 boul Hymus Pte. Claire H9R 1E1

wow I work like 5 minutes away from there.... awesome... Your from montreal are you? (Yes i know that company probably ships there rulers all over canada...) would be cool if you did live in montreal

[autexcbaty]

Shouldn't the knives of the jointer be even with the outfeed table - not slightly higher? Doesn't that put a slight taper on the cut? just curious...

[Matthiaswandel]

They need to protrude slightly. The wood has a tiny bit of give as the knives hit it. And if the knives cut just s tiny bit less than the outfeed table, the stock ends up climbing up as it moves so the knives cut nothing at all. Better to protrude slightly.

[Matthiaswandel]

It's better to make it in the summer if it's summer, and better to make it in the winter if it's winter. Because otherwise, you have to wait so long!

[theorganguy]

@Matthiaswandel LOL

[boner2008]

6:02 New Hardware Found. Damn Gremlins...

[apatientspider]

Perhaps your knives measured a bit lower near the fence on your wooden jointer due to wear. Isn't that end where you jointed some plywood not long ago?

[Matthiaswandel]

Wear makes much less of a difference. Those nicks I put on the knives with the plywood only made ridges .001" high. I found the lower nut nearest that corner holding the outfeed table wasn't tight anymore. Tightening that up put it back to where it used to be.

[spwiz5578]

A slightly hollow joint is known as a spring joint. It's used a lot in furniture building. It's the founding principal on bow clamps. Adding pressure at the slightly gapped location spreads the pressure along the entire joint.

[nintendome2]

6:02 anyone else heard that?...

[Everything96]

I love these videos!

[scarmenl]

Many of the woodworking mags have said that a small spring in the center is the way to go.

[myz98f150]

Your shop is spotless

[realcelestialphoenix]

How much does the air temperature vary?

(Thinking about thermal expansion on the metal)

[paulreider]

Really like your vids Matthias, you're a genius...

[attainableapex]

isn't putting a little gap in the middle called a spring board joint or something like that?

I know i have seen someone do this before on purpose

[Bobbysmitreshop]

@PhilStPierre Were in manitoba?

[AmtrakBoy42]

you are so good at making stuff

[PyroManicProds]

thousands of an inch?

[PhilStPierre]

Nice video! I was wondering about the unit you use to measure the gaps. What's a "thou" in millimeters ?

[Matthiaswandel]

A thousandths of an inch. 1 "thou" is about 0.025 mm.

[fishproet]

Just a question would MDF plywood be any better because of lack of movement?

[Matthiaswandel]

MDF probably has more movement, and also suffers from sag. Totally unsuitable.

[fishproet]

HAHAHA I have a hard time beleive that you made that jointer mostly out of wood!!! and great information video. Keep them coming. - Ryan

[srikanth94]

tell how to repair...

[marcel19900313]

You are a genius. I would like to do business with you. HAHA

[Bobbysmitreshop]

What part of Canada you from??

[PhilStPierre]

@Bobbysmitreshop manitoba

[deezynar]

Since moisture migrates faster from the ends of boards than the center, its good to have a slight hollow for glueing up. Having more width at the ends allows for a bit more shrinkage to occur before a crack opens up. I think you did a great job on making and setting up your jointer.

[osmanaj2002]

good knife distortion measuring idea

[baldrickthefifth]

great, after 7 minutes, it doesn't matter

[Saavik256]

@baldrickthefifth It doesn't matter *to a degree*

[MrMumpus]

great videos