Stronghold chuck jaws, whats wrong with this picture.

Apr 29, 2005 132 Replies

I think that the key difference here are the words "damage" and "marks", Derek... As you see from

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like most of us, finishes the bottoms after the bowl is dry..Now, if you want to see "damage", I learned this weekend that the dovetailedrecess should be deeper on a green bowl than on a dryer piece... I was shapingthe inside of the bowl and got a very minor catch, and one side of the recessblew out.. It didn't come off the chuck, but it wouldn't true back up either.. not sure what's worse.. *g*

mac

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Not really. The depth is limited to the wedge. On sapwood, or waterlogged, or even green, you can run some water-thin CA into the edges of the recess to help in case of a catch - which, as you learn to peel, will become a thing of the past.

Just remember to clean up after the glue hardens, so you aren't trying to grip some dust now consolidated into a lump. As a matter of fact, make sure you keep all those recesses clean, especially a prefinished. You're not smashing things, you're just trying to hold them.

You went back and read the thread?

Hope so.

I chose to interpret your "challenge" based on the substance it contained, not the spirit in which it was presented, because this is about woodturning, not about people, and your pictures substantiated something I have said for years here - you don't need to bully the wood to hold it for turning. Don't even, in my opinion, have to bully it to remove wood while it's turning. Some of the assembled think that's dogma, not just a way to save the turner and turning from beating each other up. Sounds like a closed mind with an attitude - what they accuse me of having. Look at my technique posts. They're first person singular - just the way I do things, and why I like to do them that way.

Science, on the other hand, is not a matter of opinion. As it applies here, the strength of wood in any aspect is measured as countering a force/unit area. If you have the maximum jaw area in contact with the wood, the force required to resist your wood is better divided. Period, end of sentence, true every place and instance. Thus, if you care to, you can omit one step from the decoration of the bottom by making a clean hold. For Derek, Kevin and others, one last time -

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brush away the sawdust on the bottom. I have also held for finalhollow with an external dovetail consisting of little more than a bead, andwith internal little more than a skew-cut groove. The only way I could getaway with it was to plan for optimum size - circularity - of the jaws I own.If I can do it, anyone can, but no one has to.Oh yes. I prefer small section bases with extra weight in thickness of thebase for counterbalance over "feet." I think the former makes it look likethe piece sprung up. The latter makes it look like it dropped down, andspread out from the impact.

I think the problem in my case was that I should have removed more stock BEFORE I cut the recess.. I was going to reverse chuck it later and work that way, and my initial recess wasn't really catching all wood, but also some of the bark and "sub bark" area..

mac

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I think that they don't go away, they just keep getting farther and farther apart .

Bill

On Wed, 4 May 2005 11:37:16 -0700, Bill Rubenstein wrote (in message ):

Raffan does that on purpose. it helps the newbies relate. its all theatrics.

RIGHT! I need to remember that for when it happens to me.

Bill

not me George. dont misdirect what ive said. sharing your techniques is not dogma. i never said that. its when you come off like your way is the only way, the only correct way, the only true way, and everyone who does any different is wrong. thats dogma. when you suggest that i shouldnt even be talking about jaw sizes thats dogma.

my mind is not closed. i agree with you on a lot of your technique stuff. i know the value of learning to make a nice peel cut - but the peel cut is only one of the cuts in my bag of tricks. when im roughing out a large bowl there is no way every single cut is gonna be a gentle peeling cut. that would take all day. sometimes i like taking big hogging cuts. i LIKE it. im enjoying it. im having fun. i like to push my limits on how much wood i can remove in one pass and letting the shavings fly! is that wrong? when i get close to the final shape thats when its time to pull out the finesse cuts. then the game changes to "how clean a surface can i leave?"

Ok, now is my chance to expose to the world a little game I've been inventing in my spare time. It isn't fully developed -- as you'll see in a moment.

It is called (preliminary) -- team turning. A team is made up of one lathe with a standard sized bowl blank, one catcher with a 35 gallon trash container and one turner.

The winning team is the one which fills the trash container the quickest. It is not allowed, though, for anyone to handle the shavings

-- they have to go into the container on the fly.

Big, hogging cuts may remove more material quickly but a continuous stream of shavings could fill the bucket more quickly.

Also, maybe there should be a line around the lathe and the bucket cannot go within the line.

Any comments?

Bill

neill wrote:

HEAR HERE HEAR HERE a new international game of speed skill and ability, and not necessarily in that order !!!!!

OK Bill who is going to do the timing, we need to know % of wetness of the wood of course and species of wood, do we get extra marks for bulls eye shots as opposed to rim shots ??, what about bucket size, imperial gallons US gallons or metric size, we need to have a level playing field here now OK. I request that we get double marks for the catcher that works with one hand behind his back in the dark, come to think of it, we should get these rules and regulations drawn up in a real professional way don't you think ??????? Waiting for your reply with tong firmly planted in cheek.

HAVE FUN AND TAKE CARE Leo Van Der Loo

Bill Rubenste> Ok, now is my chance to expose to the world a little game I've been

"Bill Rubenstein" wrote: (clip) The winning team is the one which fills the trash container the quickest. (clip) ^^^^^^^^^^^^^^^^ Bill, I'm going to try to get the woodturning clubs in the Bay Area to introduce this idea at the next picnic. Maybe use Jet Minilathes and five gallon pails. You could add excitement and charm to the contest by having children of the turner and catcher, on hands and knee, with whisk brooms, throwing in the shavings that miss.

Do it all the time, though it's a mixed blessing. Might be better for my waistline to fling them around.

Do we get to choose our own gouge?

Why should the moisture content matter? Gravity works fine for wet and dry.

Leo and all:

I had a feel> "Bill Rubenstein" wrote: (clip) The winning team is the one which fills the

I should not be writing this, because you have obviously not read the messages to this point as written, but through some sort of personal filter that fails to connect accusations, challenges and ad hominems to the persons who have written them and the order of who was pontificating and who replying.

So, as before, I will continue to consider this place to be about turning, not people. Where there are things which pertain to all places and people, I will continue to make them as simple declarations of fact - third person. Those things I do, favor, or want will continue in first person singular so as to be properly identified to those who understand the difference by grammar.

Bill, be careful what games you wish for. Any group that can argue for days about chuck jaws probably shouldn't be involved in competitions involving machinery and sharp tools.

In addition to the mayhem, have you considered steroid use, plugged gouge handles, corporate sponsors, ad patches on clothes, salary caps, pro vs am, interminable regional playoffs, rowdy spectators, player's unions, government oversight,TV contracts; just for starters.

In the grand tradition of rcw, I try to be cheerful, supportive and optimistic. ;)

Turn to Safety, Arch Fortiter

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right... sort of a "I meant to do that".. lol

mac

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might need rules and specs on allowed equipment... otherwise, it's like playing tennis and choosing what size ball you use..lol

mac

Please remove splinters before emailing

mac

Please remove splinters before emailing

Perhaps we should form a committee on rules for forming committies who set rules for committes that specify rules for the contests.

As soon as that happens, we can formalize the rules for the contest. :-)

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