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Forum topic by Oldschoolguy posted 09-02-2019 03:34 PM 706 views 0 times favorited 16 replies Add to Favorites Watch
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Oldschoolguy

108 posts in 693 days


09-02-2019 03:34 PM

HI LJ’s, So simple minds want to know? I am making a table top for my wife out of 3/4” birch plywood. I’ve cut the circle with my router and circle cutting jig (YEA) and need to round over the edges. First of all, what bit would give a better looking profile, a 1/16” or 1/4”. Secondly, what size shank? Thirdly, how do you set the depth of your router bit to obtain the proper profile. Fourth, do use a bottom bearing with the bit? Finally, links, comments or thoughts to any and all questions are deeply appreciated. Thanks again for your ever-ending dedication and help, especially to a mentally challenged woodworker. Blessings to y’all.


16 replies so far

View waho6o9's profile

waho6o9

8942 posts in 3433 days


#1 posted 09-02-2019 03:50 PM

Practice on scraps.

1 – That’s subjective so please practice on scrap and get the A Okay from the boss.

2 – 1/2” shanks are preferred

3 – Practice on scraps to obtain the proper profile. I put a 3/4 piece of scrap next to the bearing to eye ball it.

4 – Yes to the bottom bearing.

Using a quality bit from Whiteside etc. will yield you better results. Best of luck and we’re looking forward
to seeing your project in the projects’ thread.

You got this!

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Oldschoolguy

108 posts in 693 days


#2 posted 09-02-2019 04:01 PM

Thanks for the encouragement and comments. Would you recommend a 1/16 inch or 1/4 inch roundover?

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Lazyman

5826 posts in 2244 days


#3 posted 09-02-2019 04:03 PM

For appearance, I think that the 1/4” would look good. It eases the edge but not too much visually. However, the purpose of the table might be important to consider too. The rounded edge on a table table also makes it more comfortable to sit at. If I was making a card table, for example where you often rest your forearms on the edge, I would probably move up to a 3/8 or even 1/2” bit to get a softer edge. If your router can handle 1/2” shanks, I prefer those but it is not necessary on the 1/4” RO but preferable on 3/8” and above.

EDIT: I just realized you said you are making the top out of plywood. You really need to attach edge strips to hide the plys, especially if you want to round over the edge. You probably would not be happy with the look of the rounded over PW. You can even make the edge strips thicker so that the top looks thicker than 3/4” in which case a 1/2” roundover would look good.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View BurlyBob's profile

BurlyBob

7865 posts in 3122 days


#4 posted 09-02-2019 04:09 PM

Totally agree with everything Wahoo said, especially practice scraps!

View controlfreak's profile

controlfreak

1242 posts in 458 days


#5 posted 09-02-2019 04:10 PM

Attaching edge strips to a round plywood table top. Now this is something I need to see.

View Lazyman's profile

Lazyman

5826 posts in 2244 days


#6 posted 09-02-2019 04:24 PM

Hah. I forgot about the round top. That definitely makes it more challenging but still doable. Rounded over PW would be pretty ugly so the only other alternative would be edge banding with no roundover.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View John Smith's profile

John Smith

2688 posts in 1019 days


#7 posted 09-02-2019 04:37 PM

Flyod – how will you finish the top ? paint or clear coat.
edge banding comes in 1/16” thick rolls. great for odd shaped projects.
if you plan to use edge banding, you will be limited to rounding over
the edge. your option will be a sanding block, not a router bit so as not
to expose the plywood core, as mentioned above. the only downfall with
heat applied edge banding is that your edge MUST be perfectly true so
you won’t have gaps.

if the top is to be painted, I would fill all voids with Bondo auto body putty.
sand smooth and rout with a 1/4” roundover. (the bit shank is determined
by what size router you have).
after the Bondo is sanded smooth, do the roundover and come back with
Bondo again to fill in the new voids. block sand with the sponge block, prime and paint.

good to see you up and around, BTW !!!
.

.

-- there is no educational alternative to having a front row seat in the School of Hard Knocks. --

View Andybb's profile

Andybb

2843 posts in 1460 days


#8 posted 09-02-2019 05:49 PM



Hah. I forgot about the round top. That definitely makes it more challenging but still doable. Rounded over PW would be pretty ugly so the only other alternative would be edge banding with no roundover.

- Lazyman


Wonder if you could steam bend some edging then round that over?

-- Andy - Seattle USA

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John Smith

2688 posts in 1019 days


#9 posted 09-02-2019 07:16 PM

Lazyman
Wonder if you could steam bend some edging then round that over?
- Andybb

no – because then you get into bending the grain against the way it does not want to go.
in a round project, such as a table top, try to imagine putting masking tape along the edge
of the table then folding it over from vertical to horizontal – it wrinkles. so will the banding.
(good thought though).

.

.

-- there is no educational alternative to having a front row seat in the School of Hard Knocks. --

View LeeRoyMan's profile

LeeRoyMan

1418 posts in 584 days


#10 posted 09-02-2019 08:58 PM


Wonder if you could steam bend some edging then round that over?
- Andybb

I bent this trim around these tables. It’s a little under 1/8” and it bent fine, for being 2 1/4” wide. I was able to put an 1/8” roundover that broke the edge nicely.

I used a tie down strap to hold it in place.

-- I only know... what I know....

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Andybb

2843 posts in 1460 days


#11 posted 09-02-2019 10:02 PM


Wonder if you could steam bend some edging then round that over?
- Andybb

I bent this trim around these tables. It s a little under 1/8” and it bent fine, for being 2 1/4” wide. I was able to put an 1/8” roundover that broke the edge nicely.

- LeeRoyMan

Cool! Did you have to soak it or steam it first?

-- Andy - Seattle USA

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LeeRoyMan

1418 posts in 584 days


#12 posted 09-03-2019 12:26 AM


Wonder if you could steam bend some edging then round that over?
- Andybb

I bent this trim around these tables. It s a little under 1/8” and it bent fine, for being 2 1/4” wide. I was able to put an 1/8” roundover that broke the edge nicely.

- LeeRoyMan

Cool! Did you have to soak it or steam it first?

- Andybb


No soaking or steaming involved. Because of the length I had to do it in 2 halves. I put the seams in the middle of the long sides. I started the bend at the ends of the table letting the strap hold the material tight as it pulled it onto the table, (if that made any sense) The strap acted like a backer that helped keep the wood from splitting.

-- I only know... what I know....

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ibewjon

1984 posts in 3650 days


#13 posted 09-03-2019 01:06 AM

Nice job!!

View wildwoodbybrianjohns's profile

wildwoodbybrianjohns

1999 posts in 404 days


#14 posted 09-03-2019 11:16 AM

Rounded over ply doesnt always look shitty. Of course, thats subjective, and it helps if its quality ply.

-- Wildwood by Brian Johns: The Big Bang: Nothing - exploded into Everything. Thanks to Nothing.

View wildwoodbybrianjohns's profile

wildwoodbybrianjohns

1999 posts in 404 days


#15 posted 09-03-2019 04:21 PM

Please excuse the foul language everyone, Im a greenie, was unawares.

-- Wildwood by Brian Johns: The Big Bang: Nothing - exploded into Everything. Thanks to Nothing.

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