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Dowel diameter reduction 3/8" -> 1/4" on ends

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Forum topic by Milo posted 04-24-2014 07:06 PM 1456 views 0 times favorited 23 replies Add to Favorites Watch
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Milo

869 posts in 2785 days


04-24-2014 07:06 PM

I need to reduce some dowels to repair a drying rack for my wife.

The dowels are 30” long and 3/8” in diameter. I want to reduce each end of the dowel to 1/4” The length of the reduction at each end needs to be 1”.

Any suggestions? I’ve already destroyed one dowel trying to use my big sanding disc. The disc grabbed the dowel, yanked it between the disc and the table, and promptly reduced it to waste. Since I’d already cut the dowel to size (the other end had already be reduced), I snapped the worthless thing into pieces in frustration.

Any other suggestions? I don’t think a lathe is the answer.

Thank you,

Milo

-- Beer, Beer, Thank God for Beer. It's my way of keeping my mind fresh and clear...


23 replies so far

View Elizabeth's profile

Elizabeth

814 posts in 2609 days


#1 posted 04-24-2014 07:22 PM

Hm. I would try carefully scoring a 1/16” deep line around the circumference of the dowel using a scroll saw or band saw and a stop block, at short intervals from 1” from the end of the dowel to the end (multiple cuts) and then using a chisel from the end to chip away the bits, and sand smooth. I don’t know if this would work, so try it on one of your newly reacted scrap pieces first.

If my math is right, 1/16 off each radius will leave you with a 2/8 or 1/4 diameter.

View Rex B's profile

Rex B

320 posts in 1716 days


#2 posted 04-24-2014 07:22 PM

I think you could use a table saw sled/miter gauge. Raise the blade up 1/16, push sled forward until the dowel is over the highest point in the blade, and rotate the dowel. Repeat many times to nibble it away or use a dado stack.

-- Rex

View Yonak's profile

Yonak

979 posts in 987 days


#3 posted 04-24-2014 07:33 PM

Another way you could try is with a fence on the band saw, pushing the dowel endways between the fence and the blade, with a stop on the fence 1” in.

View chrisstef's profile

chrisstef

15673 posts in 2472 days


#4 posted 04-24-2014 07:45 PM

How about a spokeshave?

-- rock, chalk, jayhawk

View jdh122's profile

jdh122

879 posts in 2283 days


#5 posted 04-24-2014 07:46 PM

I’d whittle them down with a sharp knife. Works fine for chairmakers – just take off a bit at a time.

-- Jeremy, in the Acadian forests

View crank49's profile

crank49

3981 posts in 2437 days


#6 posted 04-24-2014 08:25 PM

Using a big disk sander for this is kinda like swatting flies with a 44 mag.
Especially with the table not adjusted close enough to the disk avoid the grabbing the workpiece.
Lucky you didn’t get an abrasive manicure.

Score around the dowel with a box cutter with only 1/16” of blade exposed. Make several circumferential cuts from the end to a point 1 inch from the end. Then use a coarse file or fine rasp to reduce the end.

If you must use a power tool, the table saw method mentioned above would be good. Think I saw that in one of those wood working tips magazines with the slight modification of using the miter gauge to keep the dowel square to the blade.

-- Michael: Hillary has a long list of accomplishments, though most DAs would refer to them as felonies.

View joeyinsouthaustin's profile

joeyinsouthaustin

1294 posts in 1538 days


#7 posted 04-24-2014 10:11 PM

You can also use the table saw to do it against the rip fence. Clamp a stop to the fence as a depth stop. Set a feather board. First rip into the end on several planes. Then you can slowly start spinning it (I like clockwise, against the direction the blade is spinning down into the table, as you are spinning, move it forward. Continue until you get to the stop. You get a smoother dowel than the mitre bar, 90 degree to blade method. (depending on you blade!) The picture shows this process except there is no stop on the fence, but you should be able to visualize that.

-- Who is John Galt?

View theoldfart's profile

theoldfart

8122 posts in 1917 days


#8 posted 04-24-2014 10:18 PM

Two possibilities

The first is a dowel plate and the second would be a tenon cuter in a brace bit. Both are old fashioned but its how things were done for years

Lie Nielson has a plate you can also make one by drilling out an “L” bracket from a hardware store. There is a posting somewhere on LJ’s about making a dowel plate.

A tenon cutter looks like this

and fits in a bit brace.

-- "With every tool obtained, there is another that is needed" DonW ( Kevin )

View a1Jim's profile

a1Jim

115202 posts in 3043 days


#9 posted 04-24-2014 10:36 PM

I like Joeyinsouthaustin’s approach.
On larger dowels I’ve held a tube just big enough for the dowel(or even square stock) to fit inside,then holding the tube across the miter gauge at 90 degrees to the blade, lower the blade so it will give the desired tenon size ,then feed the dowel or square stock (not the tube). While firmly holding the tube spin the wood inside the tube and feed it in and out of the saw blade to get a perfect tenon, you can use your fence as a stop to get the length of tenon you want.

-- http://artisticwoodstudio.com Custom furniture

View cutworm's profile

cutworm

1075 posts in 2259 days


#10 posted 04-25-2014 12:00 AM

If you have a router table and a straight bit you can use the same approach that Joey uses on the TS.

-- Steve - "Never Give Up"

View gfadvm's profile

gfadvm

14940 posts in 2156 days


#11 posted 04-25-2014 12:11 AM

I was going to suggest the router table but then I saw Joey’s post. I gotta try that!

-- " I'll try to be nicer, if you'll try to be smarter" gfadvm

View woodchuckerNJ's profile

woodchuckerNJ

1154 posts in 1100 days


#12 posted 04-25-2014 12:18 AM

I like Joey’s too.
The router is commonly used. Just build a v block and use a mortising bit.
Or use a belt sander or disk sander, put a hole in a block of wood to hold the dowel, then use that to control the feed of the dowel, and allows you to rotate it and keep it in position.

-- Jeff NJ

View bigblockyeti's profile

bigblockyeti

3668 posts in 1186 days


#13 posted 04-25-2014 12:46 AM

Set the sanding fence close to the disc so the dowel can’t fall between the two. Chuck up the dowel in a drill and keep it spinning as you slowly bring it to the sanding disc.

View Gshepherd's profile

Gshepherd

1727 posts in 1667 days


#14 posted 04-25-2014 01:03 AM

I would use the lathe, Shove the dowel as you would when using it as a knockout, clamp it down with the chuck and use a parting tool to size it down….... Here is a so so pic of what I mean, Nova DVR and I also tried it on my Turncrafter and it works…..The Nova will handle 1/2 and the Turncrafter will handle 3/8 dowel that way… Just have to use the small chuck. Remember you will have that long end spinnin out the rear of the headstock….

-- What we do in life will Echo through Eternity........

View Redoak49's profile

Redoak49

1954 posts in 1454 days


#15 posted 04-25-2014 01:07 AM

I would whittle them down a bit oversize and then use a dowel plate.

showing 1 through 15 of 23 replies

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