Darryl Keil Last Activity 2025-09-09 11:09 AM
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Don Fuller

Posts: 4

Joined: 2007-03-31
Location: Portland ME

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Subject : veneering tapers
Posted : 2007-03-31 7:39 AM
Post #33716
I have a job veneering some tapered columns, 7' long 16" to 14" dia.
Everything I can find online talks about entasis and I have had no luck finding anything other than wood or plastic,f.glass etc as materials
Would wood be stable enough
can you veneera column that taperes and has entasis
Any help from any one will be appreciated


 
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Darryl Keil

Posts: 1455

Joined: 2003-05-22
Location: Maine

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Subject : RE: veneering tapers
Posted : 2007-03-31 2:14 PM
Post #33717 - In reply to #33716
Don,

Columns with entasis makes veneering it a mild compound curve operation. The veneer would have to be cut to accommodate this. Your seams would not be straight lines but have curve in them. The question is how many pieces you would need to do it in so you don't get buckling in the veneer. I don't know if four pieces would be enough, you may need to have six or eight. Going to be a trial and error thing I'm afraid.

Sincerely
Darryl Keil


 
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Jeff Patrick


Joined: 2004-04-15
Location: Bainbridge Island, WA

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Subject : RE: veneering tapers
Posted : 2007-03-31 5:28 PM
Post #33718 - In reply to #33716
I'm curious about your problem. Are you asking about constructing wooden columns, in which case there wouldn't be a need for veneer? Or are you asking about the feasibility of veneering a fiberglass or plastic column? I am also confused about the entasis issue. Are you working with a column that already has entasis? Or are you concerned that you will have to build some entasis into the column to account for visual slimming? (That would seem unlikely on a column of only 7 feet, but I've never delved into the issue.)

The techniques for veneering a column with entasis will differ from that for a simple tapered column. And the techniques for making a wood column from solid lumber might best be asked on a general woodworking forum.


 
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Don Fuller

Posts: 4

Joined: 2007-03-31
Location: Portland ME

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Subject : RE: veneering tapers
Posted : 2007-04-01 10:24 AM
Post #33719 - In reply to #33718
These are being veneered with English pippy oak
I am concerned about the stability of a wood core
I think a plywood or fiber board core would work better, but don't know for certain
everything I have found premade have entasis figued into the process
can you successfullyy veneer to plastics or composits and what would you use for glue


 
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Jeff Patrick


Joined: 2004-04-15
Location: Bainbridge Island, WA

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Subject : RE: veneering tapers
Posted : 2007-04-02 12:33 PM
Post #33724 - In reply to #33719
First off..... I know zilch about working with English Pippy Oak. If it has it's own peculiarities, you'd better find out about them from elsewhere..... like Darryl.

Polyurethane glue seems to stick to anything. It may be the glue of choice over a plastic or fiberglass form.

If I were building the core out of wood, I think I'd make it hollow using segmented construction. Cross banding inside and out would add to stability. The inside cross banding could be done by building the rough column in two halves, cross band the inside, then glue the two halves together. Then the outside would be turned to the profile you want..... with entasis or not. Then cross band. Then the outer layer of fine veneer.

The curved pieces that Darryl spoke of can be calculated and drawn. Should you want to do this and don't know how to proceed, respond again and let me know. I can outline a procedure.

The turning of a seven foot column will be an interesting challenge!
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