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JOINTER HEAD JIB SCREWS, HOW TIGHT ?

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Forum topic by bubinga posted 03-28-2011 08:48 PM 1589 views 0 times favorited 4 replies Add to Favorites Watch
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bubinga

861 posts in 2129 days


03-28-2011 08:48 PM

Topic tags/keywords: question jointer planer

How tight should one tighten the jib screws ,when installing jointer knives?
Can they be over tight?

-- E J ------- Always Keep a Firm Grip on Your Tool


4 replies so far

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Lee Barker

2170 posts in 2312 days


#1 posted 03-29-2011 06:15 AM

Robert Vaughn is the Main Guy for jointers. He has a video on setting knives and I wouldn’t be surprised if he covers your question.

My answer is this: Just a little past snug. When you install the knives, I was told, you want to snug the gib screws all the way around the head, then, when all that is done, go around a tighten them just a bit. when you’re doing that you’re actually distorting the head so it needs to be done stepwise.

It’s a feel thing for me and hard to put words to.

Kindly,

Lee

-- "...in his brain, which is as dry as the remainder biscuit after a voyage, he hath strange places cramm'd with observation, the which he vents in mangled forms." --Shakespeare, "As You Like It"

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Tedstor

1625 posts in 2094 days


#2 posted 03-29-2011 09:27 AM

Definitely hard to explain. Snug +1/4-1/2 turn.

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Grandpa

3256 posts in 2137 days


#3 posted 03-29-2011 05:26 PM

Torque them is the correct way but most people have the feel. If a screw or fastener of any kind yeilds it is ruined. This is when the elasticity is removed and the molecules are pulled apart. This is different for each diameter and each length. There are charts available that give this information (probably in the internet today). Invest in a small torque wrench that works in the range needed and use it a lifetime if you keep it clean and dry. Cheap investment.

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Lee Barker

2170 posts in 2312 days


#4 posted 03-30-2011 05:12 PM

Grandpa, I like the way you explain the variables in torquing.

Is there a torque wrench that one could use in tightening gib screws?

-- "...in his brain, which is as dry as the remainder biscuit after a voyage, he hath strange places cramm'd with observation, the which he vents in mangled forms." --Shakespeare, "As You Like It"

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