Darryl Keil Last Activity 2025-09-09 11:09 AM
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Djarchow

Posts: 16

Joined: 2007-04-06
Location: Iowa

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Subject : Veneering curved panel with roundover
Posted : 2009-08-10 4:12 PM
Post #35675
I am getting ready to start a new project that will be veneered. It will be a rectangular subwoofer cabinet with a curved/arched top. I have a vac bag and am comfortable doing curved work. I have also veneered panels with roundovers on all 4 edges before.

For this project, I would like to make the front and rear baffles/panels have a 3/4" roundover on the top (arched) and side edges. The arched top will have a 36" radius and be 20 inches wide. The front and rear baffles will be visually offset from the sides and top by a 1/8" rebate which will make veneering the sides and top easier. But trying to veneer the roundover on three sides, especially with one of them curved will be tough.

I see a couple options for handling the front and rear baffle.

1. Make the baffles out of hardwood and mate with the rest of the cabinet's veneered Baltic birch. This would be the easiest but I would run into the problem of trying to match the veneer to the hardwood since I am looking to use mahogany with no stain. Since we don't have any veneer or decent hardwood suppliers here, I would need to get the wood and veneer via mail-order and this makes the chances of getting a good match pretty slim.

2. Veneer the center of the baffle and use hardwood for the rounded over edges. Same issues with matching the hardwood and veneer.

3. Veneer the entire front baffle and wrap all the edges including the curved one and mate the veneer at the corners. This would be the most challenging. I have veneered a few panels with roundovers on all 4 edges but it was no simple task. Now I would also have to try to mate a straight edge with a curved corner, making it even more difficult, not to mention veneering a curved roundover which I have never done before, though I do have Daryls video. There would be no issues with matching veneer and hardwood though.

I appreciate any suggestions.

Kind regards,

Dennis


 
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Don Stephan

Posts: 825

Joined: 2003-07-18
Location: Cincinnati, Ohio

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Subject : RE: Veneering curved panel with roundover
Posted : 2009-08-11 7:54 PM
Post #35676 - In reply to #35675
I'm not able to visualize with confidence your options, but I don't look for more challenges than absolutely necessary. I'd use hardwood edging where possible. Appearance differences between veneer and boards should be no more noticeable than between different boards of same species. Just my two cents.


 
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Djarchow

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Location: Iowa

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Subject : RE: Veneering curved panel with roundover
Posted : 2009-08-11 9:50 PM
Post #35678 - In reply to #35676
Don,

Thanks for your reply. I appreciate it. I will try to explain a bit better and aska few additional questions.

1. The first option is simple. Make the whole baffle out of solid wood.

2. Use hardwood edges as you suggest. If I went this route, assuming the veneer grain was in the vertical direction, what would I do on the top edge, would I use a hardwood piece with endgrain to try to match the veneer grain on the baffle? Also if I do go this route, do you know of any online suppliers who sell both hardwood and veneer and could potentially help match them?

3. I assume this was the option that was the most confusing. Here is an example of the 4 edge veneer wrapping technique used by one mfg. I have done this in the past. In my case, it would be more complicated because the top edge would be arched/curved

http://vienna-acoustics.at/company/cabinetery/Veneer_wrapping.php

Thanks again for your help.

Kind regards,

Dennis


 
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Don Stephan

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Joined: 2003-07-18
Location: Cincinnati, Ohio

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Subject : RE: Veneering curved panel with roundover
Posted : 2009-08-12 7:11 PM
Post #35679 - In reply to #35678
1. Flat rectangular panel standing up, panel taller than wider. Then cut an arch across the top, so the panel is tallest at its middle and drops off on each side, like an arched-top door. Then make one pass with a roundover bit along the sides and top. Then veneer and wrap the rounded edges. Right?
I don't think this will be possible. Because the top is curved, the veneer will have to both bend and twist along the rounded edge of the curve.
If you really want to do this, form the panel 1" narrower and 1" shorter than final dimensions. Wrap the panel with hardwood 1" wide. Trim to final dimensions. Veneer. Finally, roundover the edges. Woodcraft and perhaps Rockler will mail order veneer and hardwood, but may come from different warehouses so don't expect any color matching considerations.

2. Form a rectangular curved panel something like what one would get if a paper tube were cut lengthwise into two half (hollow) cylinders. Right?
If the edges are rounded over, then the same problem arises trying to veneer the rounded over ends of the hollow cylinder. Same solution, although much more difficult.

Alternatively, make laminations using several layers of 1/16" thick veneer, trim to size and round edges. The same approach could be used for the side panels and the cylindrical top, and then there wouldn't be any hardwood or matching issues. Glue lines wouldn't be too noticeable, but use a rigid glue. This is going to be very time consuming and present some other challenges, but possible. You'll have to decide if worth the investment in time and materials.


 
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Djarchow

Posts: 16

Joined: 2007-04-06
Location: Iowa

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Subject : RE: Veneering curved panel with roundover
Posted : 2009-08-12 7:44 PM
Post #35680 - In reply to #35679
Don thanks for the advice. Yes you are right on the panel shape and construction in number 1. The reason I thought I might be able to do the wrap on the arched top was the demonstration Daryl did on his video of wrapping the half bullnose edge of a round table top and my curve radius is 36".

I will try the hardwood edging method again. I have tried this in the past with maple veneer and hardwood and wasn't thriled with the look. There is a Woodsmith/rockler store about 2 hours from here. I may go see what they have for hardwood and try to match it to the veneer I will order.

Again many thanks!

Regards,

Dennis
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