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Tails or Pins?

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Forum topic by jack43 posted 03-03-2014 08:11 PM 668 views 0 times favorited 8 replies Add to Favorites Watch
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jack43

5 posts in 1084 days


03-03-2014 08:11 PM

I’m building a saw till to hang on the wall. I want to use dovetail joinery for the top, bottom and sides. Do the tails go on the side or the bottom? Thanks for the help.


8 replies so far

View BinghamtonEd's profile

BinghamtonEd

2281 posts in 1834 days


#1 posted 03-03-2014 08:13 PM

The tails would usually go on the sides, as they would provide more structural rigidity against the force of gravity. (in other words, the bottom won’t fall out of the sides and the sides won’t fall out of the top due to the weight of the thing).

-- - The mightiest oak in the forest is just a little nut that held its ground.

View bondogaposis's profile

bondogaposis

4032 posts in 1816 days


#2 posted 03-03-2014 08:20 PM

Yep, tails on the sides.

-- Bondo Gaposis

View jmos's profile

jmos

737 posts in 1834 days


#3 posted 03-03-2014 08:24 PM

Yup, tails on the sides. Otherwise the only thing holding the bottom on is the glue. Not that that can’t work, finger joints are strong and don’t have a mechanical lock; just make sure you have a lot of glue surface.

Same for drawers, tails on the sides, so the mechanical strength of the joint helps keep the drawer together when you pull.

-- John

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jack43

5 posts in 1084 days


#4 posted 03-03-2014 09:55 PM

Thanks to the 3 of you. That’s what I thought but the more I thought about it , the more unsure I got. Too much thinking.

View DrDirt's profile

DrDirt

4169 posts in 3207 days


#5 posted 03-03-2014 11:16 PM

Tails on the sides –
Picture it as “If there was no glue” and you put a can of nails inside on the bottom, would the bottom fall out?

Pins on sides – yes
Tails on sides- No

-- 'Political correctness is fascism pretending to be manners' ~George Carlin

View oldnovice's profile

oldnovice

5730 posts in 2832 days


#6 posted 03-03-2014 11:55 PM

I could be contrary to those above but that would make be rather stupid!

PINS ON SIDES

-- "I never met a board I didn't like!"

View BinghamtonEd's profile

BinghamtonEd

2281 posts in 1834 days


#7 posted 03-04-2014 01:43 PM

The point of the tail is to give a mechanical hold against the direction of the applied force. Since, in this case, the majority of force is downwards, what purpose does putting them on the bottom piece serve? Unless he’s constantly bumping into the plane till or abusing it, there should be very little side-to-side force.

-- - The mightiest oak in the forest is just a little nut that held its ground.

View bigblockyeti's profile

bigblockyeti

3668 posts in 1185 days


#8 posted 03-04-2014 01:54 PM

If the pins are on the side the bottom can simply fall out without the addition of mechanical fasteners or glue. The same is true with drawers, you’re very unlike to find pins on the side of an old chest drawer, the face would have been long ago pulled off.

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