Laying Out Ellipses
Spreadsheets, formulas, jigs, or approximation - quick links to all methods. April 11, 2005
Does anyone know how you make an elliptical layout compass with 2 sliding blocks of wood?
(Architectural Woodworking Forum)
From contributor A:
If you have a spreadsheet program that can open up an Excel file, then go to this link, and download the free file. One of the worksheets has ellipse calculations and drawings that will be of help to you. Related web page: Spreadsheet Calculation Program
From contributor B:
A simple way to do it is to just nail down a sheet of plywood in the lower quadrants with the corner at the origin and use the edge to guide the pins in your trammel. Just flip the piece to do each quadrant. There is a way to approximate an ellipse, using a three or five point method, which is simply two or three radii. It is much simpler than the above method. It is hard to tell the difference.
Here is a useful link describing all methods. Related web page: Ellipse
Would you like to add information to this article?
Interested in writing or submitting an article?
Have a question about this article?
Have you reviewed the related Knowledge Base areas below?
KnowledgeBase: Knowledge Base
KnowledgeBase: Woodworking Miscellaneous
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.
335 Bedell Road
Montrose, PA 18801
Copyright © 1996-2016 - WOODWEB ® Inc.