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An exceptional dovetail

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An exceptional dovetail

#1

An exceptional dovetail

Bill Tindall, E.Tn.


I know, you are probably thinking if Bill thinks that is an exceptional dovetail he needs to start using Blue Tape. The rest of the story.....

Interruptions in the midst of dovetailing are to be avoided. I was making the pins for this drawer, foolishly, while having fiber Internet installed. Yes! Finally out here in the out back we have fiber cable strung down the road last week. This cable came 2000' overhead from the road, then underground to the house, then through the foundation. It needed to miss underground power to fence charging station, water line, septic tank line and when boring through the brick wall miss the stove power line to wind up in the basement and not the living room. It worked out perfectly.

The dovetail did not. When I went to assemble I realized I had marked the pins from the top of the drawer side and not the bottom. They were cut upside down. What to do? Making another quarter sawed side was not going to be easily done.

Here is the exceptional part, overstated just a bit. I had sawed the dovetails so symmetrically/evenly on the drawer side that the drawer front pins were almost in alignment with side tails even though they were marked from the opposite side of the drawer side.

I decided to treat this joint as a pins first joint. I aligned the drawer front pins on the mis-cut side and marked. At most the alignment was off by a line width. The result is shown in the picture.

I this case I will patch the worst of the gaps and nobody will ever notice.

Re: An exceptional dovetail

#2

good recovery

Henry (Raleigh NC)

I wish my mistakes would cover up as well.

Henry

Re: An exceptional dovetail

#4

Raised the bar now...

Henry (Raleigh NC)

not only do I need to learn to cut DTs, I need to lay them out symmetrically to allow for potential error recovery. That will take luck and some yet undeveloped skill.

Re: An exceptional dovetail

#5

Re: An exceptional dovetail

Joe in a Cleveland suburb

What's wrong with using blue tape? :\

Re: An exceptional dovetail

#7

Re: An exceptional dovetail

Derek Cohen (in Perth, Australia)

Bill, did you not write, a short while ago, that you just saw and not mark the dovetails? If so, the repetition is remarkable. Really! Take out a Lotto ticket today! :)

Regards from Perth

Derek

Re: An exceptional dovetail

#8

Mega Millions won

MartinMJ

Well the billion jackpot is gone. ONE winning ticket here in Michigan about 10 miles south of me. But the

reset is $20 million. Odds are only 1:302,575,350. I remember when $1 million prizes were paid $50,000 a year

for 20 years. That was a very comfortable number way back.

Re: An exceptional dovetail

#9

Re: Mega Millions won

John in NM

I also remember when these big lotteries first became popular, and the model was quite different - they tended to pay about a $1m purse every week rather than rolling it over as often as not to generate even bigger jackpots and spurring even more sales. One can only suppose that this is an intentional feature, but I'll admit I don't know anything of the mathematics of it.

About that time I was living in Arizona and heard the best statistic on those big lotteries. An Arizona resident was more likely to suffer a shark attack than win the state megabucks lottery :D And that's back when the odds were not so absurd as now.

Beats raising taxes though, at least there is a choice involved with lotteries :D

Re: An exceptional dovetail

#10

Re: An exceptional dovetail

Bill Tindall, E.Tn.

Clarification, with board in vise orientation: I do not mark the vertical lines. I do mark the top lines with a slotted jig that sets the width of the narrow part of the tail and the offset of the half pins . See picture


The most apparent feature of a narrow pin dovetail joint is the width of the pin. The dovetail angle can vary several degrees and not be noticed. Even the spacing is not critical for a multi tail joint to appear uniform. Hence, the only feature of a dovetail that I work to get precise is the pin width. If there is consistency with the other features it indeed is luck, or a result of doing it a bunch of times to where it becomes rote.

Re: An exceptional dovetail

#11

Re: Mega Millions won

Ed Wozniak

The odds of winning the lottery are better if you buy a ticket, but not much better.

Re: An exceptional dovetail

#12

Yeah....

John in NM

That's the irony - what is the difference between impossible and 300m to 1? Not a lot :D

I wonder what the odds are of finding the winning ticket blowing around on the sidewalk? 6b to 1? :D

Re: An exceptional dovetail

#13

Mathematics of the lottery

Jason Roehl

The only real mathematics that you need to know about the lottery is this (may vary some, but not much):

For every $1 you spend on a ticket, on average, you win back about $0.50. The other $0.50 goes to administration of the lottery and the government.

Jason

Re: An exceptional dovetail

#14

Don't get me started

John in NM

State lotteries are a balancing act of good and bad effects. I tend to think they have tipped over into a racket now, however (as in the bad very much outweigh the good).

You notice that they never tell the marks how much they took in on the sales that drove that $1 billion jackpot? And yet they require McDonalds to tell me how many calories are in the burger I will buy regardless....

Nothing is quite so stunning as collectively endorsed hypocrisies

Re: An exceptional dovetail

#15

beyond that...

David Weaver

..the present value of the prize is usually about half or sometimes less (if you earn any significant return yourself beyond a bond rate) of the prize. Stating the prize as a nominal annuity total greatly overstates the value.

I think it's helpful for people who buy tickets to compare an accumulated value of tickets with earnings to their odds of winning the jackpot. Obviously, on average it's going to be somewhere around 4 times as great as the expected lottery winnings, except that the actual lottery winnings will usually be zero.

If someone likes gambling and they just really need a tingle, they could put those dollars in high risk speculative stocks (which still earn a significant return with some diversification).

Comparing odds to extremely rare events gets even more interesting. Mega millions is one chance in 302.5MM. The chance of finding that you're a long lost relative of royalty somewhere in the world is greater.

40 times more likely to get struck by lightning and killed (not just struck, but killed) than winning with a single ticket.

Re: An exceptional dovetail

#16

Re: beyond that...

John in NM

Heheh... just went and looked for some other analogies of lottery odds :D

Best so far was on the first page of a reddit thread:

"Imagine that at your job you got paid in lottery tickets instead of money. For every second you work, you get a lottery ticket. If you work full time, 40 hours a week, 50 weeks a year, on average it would take a full 40 years of work to get paid once!"

Re: An exceptional dovetail

#17

johannaj

Re: An exceptional dovetail

johannaj

For big cabinet drawers I used my Porter Cable jig. But my big dovetail project was a Shaker cabinet that had over 100 tiny dovetails in the drawers.


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