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Knowledge You Can Build On — Est. 1998

screws in end grain

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screws in end grain

#1

screws in end grain

Mike Schwing from Md.

>Funny how timing works occasionally. We just had a thread about using screws in end grain and for the first time in memory, I've found it necessary to do something in that fashion. (chicken or egg?)

This piece is the beginning of another in my "bug" series. It will be gigantic in size relative to the first ones, and this block of dry silver maple crotch is about 15" tall. I wanted to turn it off center, and to leave the corners "square" like they are now, so it is very unbalanced. I do not have a steady rest and need all of that extra mass for carving material.

I did try using a tenon with the 4" jaws but it would not hold without the tailstock in place and I needed to hollow this. So I epoxied and screwed a heavy duty faceplate with long screws on. It holds just fine and I'm nearly done with all of the turning on this piece. The 3520 spins it effortlessly and totally vibration free but I turned this at a low speed due to the sharp corners and off balance center.

It is amazing how much time one can spend just setting up a piece to turn!


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Re: screws in end grain

#2

and while I was at it

Mike Schwing from Md.

>I snapped this as a teaser. What in the world could be doing with all of those little hollow forms?


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Re: screws in end grain

#3

Re: and while I was at it

Robert Cox

>I bet the boys could come up with a few ideas.

But I'll be nice.

Re: screws in end grain

#4

Re: and while I was at it

Lee Weed

>Could it be a twister?

Re: screws in end grain

#5

Spindle extension ?

johnd

>Where do you get an extension like you have? That would help me. Thanks

Re: screws in end grain

#6

Re: and while I was at it

Jim King-Iquitos,Peru

>Looks like a whole family of bugs to me.

Re: screws in end grain

#7

Re: and while I was at it

Sean Troy

>Your a very devious man Mr. Schwing !!! LOL, Sean

Re: screws in end grain

#8

Re: Spindle extension ?

Mike Schwing from Md.

>John, that came from www.bestwoodtools.com and I really love it. I wish the spindle threads were hardened, and I wound up drilling my own hole through the center for my vac chuck, but my spindle extender never leaves my lathe.

Re: screws in end grain

#9

Soon-to-be Antenna?

Garrett in Victoria

>

Re: screws in end grain

#10

Re: screws in end grain

Don Henthorn

>Looks like the solar system.(-:

Re: screws in end grain

#11

how will you remove the epoxy?

Andy in Raleigh

>I am assuming that you won't throw away the faceplate (correct me if I am wrong). I just made a 1" oak waste block with a recess. I mixed the epoxy in the recess and then slipped the tenon in and spun the blank (by hand) to spread the squeezed out epoxy evenly between the block and blank. It occurred to me that this is major overkill and I probably didn't need to bother with the recess and tenon (though it was a convenient place to mix the epoxy and it guarantees that I centered properly). If I could easily remove the faceplate later, I probably wouldn't even need a waste block. How do you do that?

-Andy

Re: screws in end grain

#12

soak it in alcohol

Mike Schwing from Md.

>It'll soften/dissolve the epoxy overnight enough that you can scrape it off easily.

First I'll part it off and turn most of the glue away. What is too close to the bone will be soaked in denatured alcohol, face down in a shallow container, only covering the epoxy and face of the faceplate. It'll scrape off like that gel stuff people use to remove paint after a good soak.

Re: screws in end grain

#13

Re: Many epoxies will soften with heat.

Al Crandall

>When I was building homebuilt airplanes, it was common knowledge that your fibreglass and epoxy plane should not be painted with a dark colored paint, especially if you had a model which had an epoxy impregnated landing gear. The dark color would absorb enough solar energy while sitting on the tarmac outside the terminal that the weight of the plane would deform the landing gear. I suspect that a hair drier would make a great epoxy softener.

Re: screws in end grain

#14

Re: soak it in alcohol

Andy in Raleigh

>Hmmm...

That must be why they recommend against drinking while boating ;->

I take great pride in the fact that my two boats could pass through a metal detector (except for the oarlocks and sailing rigging which can be removed). It never occured to me that they could be done in by Jack Daniels.

Will that work for all epoxy?

Thanks!

Andy

Re: screws in end grain

#15

Re: Spindle extension ?

Barry Turner

>Why are you using the spindle extender? It looks like using it would introduce more spindle runout and subsequently more vibration to the blank.

Re: screws in end grain

#16

Re: Many epoxies will soften with heat.

john Lucas

>You are correct Al. I used to add accessories to Archery Equipment for people and I could remove the plugs that were epoxied in place with nothing but a hair dryier.

Re: screws in end grain

#17

Re: Spindle extension ?

Mike Schwing from Md.

>Come on over and compare them some time. You will not be able to detect any difference at all.

Re: screws in end grain

#18

Re: Spindle extension ?

George Van in WI

>Thanks Mike, my order will be sent today, that extension will be perfect for clearing the wide headstock on the 3520!

Re: screws in end grain

#19

I'm amazed. . .

Ron in Drums PA

>I'm amazed at the amount of great work you consistently put out.

How many minutes each day do you spend away from the lathe?

Re: screws in end grain

#20

Re: I'm amazed. . .

Mike Schwing from Md.

>Thank you. I turn out lousy work, too, (quite a bit sometimes) but you don't get to see it. It is burned in the fireplace.

Re: screws in end grain

#21

Thanks Mike

johnd

>

Re: screws in end grain

#22

9 Hollows = 9 Planets?

Jay in TX

>

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