|
||||
| Home » Forums » Adhesives » Message | Login | |||
|
||||
|
You are not logged in. Consider these WOODWEB Member advantages:
Free Form Railing Help
4/5  0 --  | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
|
|
|
I'm trying to stiffen curved sheets of plywood along one edge. They are held in place at the ends and somewhat stable, but would movve with a lot of weight. I would really like to do the glueups without using other forms or heavy cauls and with a minimum of clamps.
I'm looking for a glue as well as a process. Any suggestions?
Thanks in advance,
Jim
|
|
|
[X]
Member's Business Categories:
Architectural Millwork - Custom Millwork Cabinets - Kitchen & Bath Cabinets  Member |
Not sure if i understand. Got a sketch?
|
|
|
|
Not to scale, but here's a quick sketch. The plywood is 1/4" or thicker, the length might be 12' (with splices in the ply) and I'm thinking perhaps 6-10 plies, 1/4" thick, maybe 1 1/2 - 2 1/2" wide. I'd rather not screw it together to set the glue. I have a lot of flexibility about the finished appearance, and I might shape the rail (like, roundover or thumbnail). I mostly need it strong and to a certain extent stiff.
View higher quality, full size image (1429 X 1928)
|
|
|
[X]
Member's Business Categories:
Architectural Millwork - Custom Millwork Cabinets - Kitchen & Bath Cabinets Member |
JIm, well i think you re still going to have to clamp this whole thing together as you go. can you use spring clamps along the length and clamp them to the wider substrate? I ma still not fully clear from the sketch but it looks that you can ue the initial bent sheet as your basis to build up the edge. If you glue 1 or 2 layers at a time you should be ok. You can use titebond 3 or maybe even west system epoxy (gougeon brothers) to get it to work.
|
|
|
[X]
Member's Business Categories:
Architectural Millwork - Custom Millwork Cabinets - Kitchen & Bath Cabinets Member |
is this what you are meaning?
|
|
|
|
Pretty much but my graphics program forgot to save a line ;?)
The plywood will be triangles. The bend needs reinforcing and the edge needs thickening.
Jim
|
|
|
[X]
Member's Business Categories:
Architectural Millwork - Custom Millwork Cabinets - Kitchen & Bath Cabinets Member |
Just re-read the 12' part. wow, well if you can somehow get the surface bend to hold and still allow you to add layers of plywod then you should be able to make a kind of shell, you know? I think you may have to make some sort of a form to bend it around. I cant think of how to clamp it enough without cauls unless you staple one layer to the other like boatbuilding. A vac bag would be perfect too but you may not have those resources at hand.
http://www.westsystem.com/ss/
http://www.gougeon.com/
|
|
|
[X]
Member's Business Categories:
Architectural Millwork - Custom Millwork Cabinets - Kitchen & Bath Cabinets Member |
Maybe this idea...
Tree Tower Project Update
I'm looking to do this on the fly. Looking at the blog about building the treehouse? Intense jig building. I'm trying to avoid that.
I can't put anything into a vacuum bag because it will already be erected, both ends tied in, and I can't get a bag around it.
The idea of spring clamps and epoxy may work, but it might be pretty runny while it's setting up, leaving a lot of mess to clean. I can power plane oand/or rout the edges, but if it gets on the panel it will be difficult.
Any other thoughts?
If I were you, I would consider the bagging some more. I have done numerous projects too big for a small crew to get into a bag. I lay the material onto the bottom half of the bag, while gluing the layers, then seal the top half down with two sided carpet tape, and some heavy calk like butyl.
Epoxy has the bridging properties, if you thicken it with something like colloidal silica, to about as thick as latex paint or catsup.
When you have the form outside the bag, it can be quite simple. it only has to be strong enough to support the resistance to the bend. All the pressure is inside the bag.
While I have three pumps, a while back, i did a test to see how much a sears shop vac would pull. I sandwiched my bath scales between two 1' squares, and was surprised to see 200 psf. That is about 1/10 what I can get with the other pumps, but epoxy only needs contact from both sides of the glue line.
I quit using West brand a long time ago. their price is about twice what I spend at Fiberglass Coatings Inc. down in FL. The one to one, comes thicker and is better for glue, than one formulated for glass or other fiber saturation.
As I said, I can't use a bag. The plywood will be held on both ends as part of a built structure. Yes, bags have advantages, but in this situation I can't use one.
If you don't want to use a form, and can get to all sides, I've used strips of rubber inner tube for clamping curved laminations. Get the largest diameter tubes you can find and cut them into 1-2" wide strips. Then just wrap the strips around your laminations as you go, (like wrapping a bat handle or steering wheel). You'll still have to use a few clamps, though, at least at the ends.
Can you build the bag in place on your plywood frame
4/6
4/8
4/8
4/18
5/5
? Take that heavy vinyl your aunt used to upholster her chairs with and make your own bag folding it together and sealing it with duct tape. it works really well. No need to buy expensive vacuum bags.
0 --
Buy & Sell Exchanges | Forums | Galleries | Other Resources | Site Map
Buy and Sell Exchanges
Job Opportunities and Services Exchange
Employment opportunities and services within the woodworking industry
Lumber Exchange
A worldwide buy/sell exchange for lumber and wood products
Machinery Exchange
A worldwide buyer and seller exchange for woodworking machinery and equipment.
Classified Ad Exchange
Classified advertising for the woodworking industry (for advertisements that do not include machinery, lumber products and employment listings)
Forums
Adhesives Forum
Discussing topics related to adhesives within the woodworking industry
Architectural Woodworking Forum
Discussing quality standards and production of architectural wood products
Business and Management Forum
A forum for the discussion of business topics: from sales and marketing to dealing with difficult customers.
Cabinet and Millwork Installation Forum
Discussing all aspects of installation issues encountered by cabinet and millwork installers.
Cabinetmaking Forum
Discussing 32mm and face frame cabinet construction including fabrication, casegoods design, and installation.
CAD Forum
Shedding light on the all-too-often shadowy world of CAD.
CNC Forum
Discussing CNC (computer numerically controlled) woodworking equipment, software, and automated product manufacturing.
Dust Collection, Safety and Plant Operation Forum
Discussing topics related to maintaining a safe and productive working environment.
Professional Finishing Forum
Finishing issues for the production environment
Forestry Forum
The science and art of forest cultivation and timber management, planting, surveying, tree diseases, silviculture and timber harvesting
Professional Furniture Making Forum
Helping professional furniture makers improve quality, save time, and increase profits
Laminating and Solid Surfacing Forum
Issues related to laminating and solid surface materials and processes
Commercial Kiln Drying Forum
Discussions covering issues faced be commercial drying operations that process at least 750,000 bd. ft. of lumber per year
Sawing and Drying Forum
Discussing topics related to primary processing and drying of lumber
Solid Wood Machining Forum
Discussing topics related to the machining of solid wood
Value Added Wood Products Forum
Learn how to improve your output, find new markets, and boost sales of your lumber products
Veneer Forum
Discussing topics related to veneer processing, manufacturing, and fabrication
WOODnetWORK
An electronic discussion group for woodworkers throughout the world
Galleries
Project Gallery
Where professional woodworkers can post examples of their work
Sawmill Gallery
Professional primary processing companies display and describe their sawmill facilities
Shop Gallery
Professional woodworkers display and describe their shop facilities, products and equipment
Shopbuilt Equipment Gallery
Professional woodworker's jigs, rigs, and shopbuilt equipment
Other Resources
Industry News
Late-breaking news from all sectors of the wood industry
Video Library
Index of industrial woodworking related digital videos on the web
Auctions, Sales and Special Offers
Advertisers offering woodworkers discounted prices on good and services, and announcements of upcoming auctions
FORUM GUIDELINES: Please review the guidelines below before posting at WOODWEB's Interactive Message Boards (return to top)
(return to top).
Carefully review your message before clicking on the "Send Message" button - you will not be able to revise the message once it has been sent.
You will be notified of responses to the message(s) you posted via email. Be sure to enter your email address correctly.
WOODWEB's forums are a highly regarded resource for professional woodworkers. Messages and responses that are crafted in a professional and civil manner strengthen this resource. Messages that do not reflect a professional tone reduce the value of our forums.
Messages are inappropriate when their content: is deemed libelous in nature or is based on rumor, fails to meet basic standards of decorum, contains blatant advertising or inappropriate emphasis on self promotion (return to top).
Libel: Posts which defame an individual or organization, or employ a tone which can be viewed as malicious in nature. Words, pictures, or cartoons which expose a person or organization to public hatred, shame, disgrace, or ridicule, or induce an ill opinion of a person or organization, are libelous.
Improper Decorum: Posts which are profane, inciting, disrespectful or uncivil in tone, or maliciously worded. This also includes the venting of unsubstantiated opinions. Such messages do little to illuminate a given topic, and often have the opposite effect. Constructive criticism is acceptable (return to top).
Advertising: The purpose of WOODWEB Forums is to provide answers, not an advertising venue. Companies participating in a Forum discussion should provide specific answers to posted questions. WOODWEB suggests that businesses include an appropriately crafted signature in order to identify their company. A well meaning post that seems to be on-topic but contains a product reference may do your business more harm than good in the Forum environment. Forum users may perceive your references to specific products as unsolicited advertising (spam) and consciously avoid your web site or services. A well-crafted signature is an appropriate way to advertise your services that will not offend potential customers. Signatures should be limited to 4-6 lines, and may contain information that identifies the type of business you're in, your URL and email address (return to top).
Repeated Forum Abuse:
Forum participants who repeatedly fail to follow WOODWEB's Forum Guidelines may encounter difficulty when attempting to post messages.
There are often situations when the original message asks for opinions: "What is the best widget for my type of shop?". To a certain extent, the person posting the message is responsible for including specific questions within the message. An open ended question (like the one above) invites responses that may read as sales pitches. WOODWEB suggests that companies responding to such a question provide detailed and substantive replies rather than responses that read as a one-sided product promotion. It has been WOODWEB's experience that substantive responses are held in higher regard by our readers (return to top).
The staff of WOODWEB assume no responsibility for the accuracy, content, or outcome of any posting transmitted at WOODWEB's Message Boards. Participants should undertake the use of machinery, materials and methods discussed at WOODWEB's Message Boards after considerate evaluation, and at their own risk. WOODWEB reserves the right to delete any messages it deems inappropriate. (return to top)
Forum Posting Form Guidelines
Your Name
The name you enter in this field will be the name that appears with your post or response (return to form).
Your Website
Personal or business website links must point to the author's website. Inappropriate links will be removed without notice, and at WOODWEB's sole discretion. WOODWEB reserves the right to delete any messages with links it deems inappropriate. (return to form)
E-Mail Address
Your e-mail address will not be publicly viewable. Forum participants will be able to contact you using a contact link (included with your post) that is substituted for your actual address. You must include a valid email address in this field. (return to form)
Subject
Subject may be edited for length and clarity. Subject lines should provide an indication of the content of your post. (return to form)
Thread Related Link and Image Guidelines
Thread Related Links posted at WOODWEB's Forums and Exchanges should point to locations that provide supporting information for the topic being discussed in the current message thread. The purpose of WOODWEB Forums is to provide answers, not to serve as an advertising venue. A Thread Related Link that directs visitors to an area with inappropriate content will be removed. WOODWEB reserves the right to delete any messages with links or images it deems inappropriate. (return to form)
Thread Related File Uploads
Thread Related Files posted at WOODWEB's Forums and Exchanges should provide supporting information for the topic being discussed in the current message thread. Video Files: acceptable video formats are: .MOV .AVI .WMV .MPEG .MPG .FLV .MP4 (Image Upload Tips) If you encounter any difficulty when uploading video files, E-mail WOODWEB for assistance. The purpose of WOODWEB Forums is to provide answers, not to serve as an advertising venue. A Thread Related File that contains inappropriate content will be removed, and uploaded files that are not directly related to the message thread will be removed. WOODWEB reserves the right to delete any messages with links, files, or images it deems inappropriate. (return to form)
Refer a Friend || Read
This Important Information || Site
Map || Privacy Policy || Site User Agreement
Letters, questions or comments?
E-Mail us and let us know what you think. Be sure to review our Frequently Asked Questions page.
Contact us to discuss advertising or to report problems with this site.
To report a problem, send an e-mail to our Webmaster
Copyright © 1996-2019 - WOODWEB ® Inc.
All rights reserved. No part of this publication may be reproduced in
any manner without permission of the Editor.
Review WOODWEB's Copyright Policy.
The editors, writers, and staff at WOODWEB try to promote safe practices.
What is safe for one woodworker under certain conditions may not be safe
for others in different circumstances. Readers should undertake the use
of materials and methods discussed at WOODWEB after considerate evaluation,
and at their own risk.
WOODWEB, Inc.
335 Bedell Road
Montrose, PA 18801
Contact WOODWEB
