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Last Updated
03/31/2019
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION. |
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CURVE DRAWING sa COMPASS & TRAMMEL (DRAWING INSTRUMENT) x ARC DRAWING x ELLIPSE DRAWING x FAIR CURVE DRAWING x OVAL DRAWING xx DRAFTING xx DRAWING & PAINTING xx GEOMETRY & TRIGONOMETRY Tips on making a using a "fairing batten" to draw curved lines. Drawing an oval or ellipse of a specific size using the two-nail and loop-of-string method. Jig for drawing a perfect oval (ellipse) of a given length and width. Jig for drawing an arc with a gentle curve is made from two sticks and a few nails. Use a bar clamp to compress the batten when drawing fair curves. Making and using a router ellipse jig that allows cutting or drawing perfect ovals without the hassle of templates or string. Tracing bow made from dowel rod and string is used to trace a curve. This works better than using square-edged stock. Formula for determining the radius of a curve. Jig for marking out an ellipse of any size. Sliding jig that generates perfect ovals for mirror and picture frames, etc. Known as "croix ou equerre mobile", it has been in use at least since 1816. A no-jig method for drawing an ellipse. Adjustable batten for drawing fair curves. Drawing tool for large curves is made from a thin wooden slat. The curve is adjusted by a length of pull chain. Simple jig for tracing around a curved chair leg using a pencil in order to make a pattern. Tip describes how to draw parallel complex curves using a template made from coil solder. Circle and ellipse drawing programs. (1) Draw a circle when you know 3 points on the circumference. (2) Draw an ellipse from the 2 foci and a point on the perimeter. Written in Applesoft BASIC. Workshop geometry. How to draw an ellipse. Workshop geometry. Three-centered ellipse. How to fabricate an elliptical window, transom light or a mirror frame out of wood. Transferring curves the easy way. How to use a French curve and a flexible curve. How to lay out an oval of almost any size. Method of drawing a perfect oval pattern. Tips on drawing circles, arcs, and curves using a variety of templates. How to scribe an arc for cutting an archway, making a valance or other large semi-ellipse. Adjustable template for drawing large curves is made from a strip of hardboard and some string. Combine a wood batten and a bar clamp to form a template for drawing a large sweeping curve. Technique for drawing an ellipse using a string and three small nails. A way to draw smooth elliptical curves using a framing square and a narrow board fitted with two nails and a pencil. The scribed ellipse. An easy way to lay out elliptical coves. Utilizes a homemade square and scribing rod to draw the ellipse. Drawing ellipses. Three methods are shown. (1) Looped string method. (2) Paper strip method. (3) Ellipse trammel. Technique for drawing a smooth curve to fit a given width and height uses 2 sticks and 3 nails. Adjustable curve is made from a 36" piece of hickory and some string. How to draw all or part of an ellipse using a length of lath and a framing square. Pattern for drawing the superellipse. This is a contemporary classic curve of unusual grace used on some Scandinavian tabletops. Draftsmen's method for laying out an ellipse does not require calculations or gadgets. Tip: Shallow-curve drawing method uses a "spile board". Simple technique for drawing a half-ellipse. Tip on casting your own spline weights from lead. Spline weights are used to hold a spline when laying out curves. Formula for calculating the radius of an arc that must pass through three predetermined points. Drawing device which traces a portion of a parabola. Method for calculating the radius of an arc of known chord and rise. Woodcutting technique for making the pieces for an elliptical picture frame that requires only one setting for all miter angles. Simple device that makes drawing an ellipse easier and more accurate. Tip on keeping a stack of different-sized washers for drawing arcs and round corners. Tip on drawing a curve using a thin wooden spline as the template. Three ways to lay out (draw) an elliptical shape for a small table top. Drawing and using four basic curves. Enliven furniture designs with ovolos, ogees, serpentines and ellipses. Elliptical fan motif (with a turned rosette at the center) is used to decorate a display case. The motif is built-up from seperate wooden wedges, instead of carved. Tips on laying out curves using a wooden batten. Tips on drawing freehand curves (irregular or non-geometric curves) in furniture design. Tip on using a string and some spray paint to lay out a graceful curve (parabolic arch). How to draw an oval (ellipse) of any size and shape. Drawing a "fair curve" when designing airplanes. An overview of the mathematics and the techniques for producting an ellipse, parabola, hyperbola and other fair curves. How to draw an oval with a compass and straightedge. Tip: Easy way to draw an ellipse using a string and pencil. Tip on drawing an elliptical or "basket-handle" arch using string and two nails. Laying out an ellipse using only a straightedge and a ruler. Ellipse trammel track. Lay out large curves and arcs using this adjustable bow-and-string device. The geometry for ovals. How to construct an oval with given dimensions. Oval layout jig. This cross-shaped jig has perpendicular dovetailed channels routed into the top. Trammel with two pivot points slide in the channels. A simple jig for laying out large curves and arcs is made from a notched stick, bow, and string. No-guess ellipses. How to accurately draw an ellipse using two nails and a loop of string. Layout tips. (1) Center finder for the edge of a board. (2) Scribing a parallel line around a work piece or pattern using a poster board guide. (3) Tips on drawing a large arc without a compass. (4) Using coiled solder as a flexible curve. (5) Transfering a photocopy of a pattern to work piece using a hot iron. Tip on drawing a full-size pattern for tube bending by using a piece of flexible plastic tubing as a large French curve. Practical shop geometry. (1) Finding the center of a circle. (2) Laying out ellipses. (3) Drawing hexagons, octagons and other polygons. Homemade oval marker is used for marking mat board and laying out picture frames with oval cutouts. Straight talk about circles. How to find the center of a circle, make perfectly round corners, and other circular needs which can affect woodworkers. Techniques for drawing both a circular arc and an elliptical arc over a window or doorway. Fast-forming fairing stick. Making and using a bowlike layout tool to draw smooth arcs. Make your own spline weights (ducks), those lead weights used by designers and loftsmen to hold flexible splines to desired curves. Two methods of drawing an ellipse are illustrated. Drawing an elipse. Three methods. Tip: How to draw an elipse. Tip: How to use a steel carpenter's square to layout an ellipse to fit particular finished dimensions. Flexible curve drawing tool is made from vinyl tubing and plumber's solder. Drawing an arc using a simple jig consisting of four nails and two wood strips. Long, thin stick and a string are used to make an adjustable "bow" as a template when drawing a long, gentle curve. How to make laminated mirror (or picture) frames with an elliptical shape. Draw an ellipse using a simple trammel. Tip on turning an ellipse using the off-center lathe mounting technique. Elliptical compass. An instrument for drawing an ellipse. Angle wrangle. A quick course in trigonometry and geometry for the woodworker. How to draw octagons, hexagons and other angles. Mechanical method for drawing an accurate parabolic arch. How to mark out an arc on a piece of wood using three nails and a flexible straight edge. Draw an ellipse using a roofing square and a piece of lath. How to lay out a fair curve (a smooth curve of little height in relation to the width). Tip: Use a thin wooden batten to draw long, sweeping curves. Tip: Make an adjustable "bow curve" for drawing large symmetrical curves. How to draft an oval. How to draw an ellipse. Shop geometry. (1) How to make a jig for drawing an ellipse. (2) How to draw an ellipse with T-square, triangle, pencil compass and a French curve. (3) How to create a round corner that flows smoothly into the sides. (4) How to create a smooth circle or arc between a straight line and a circle. (5) How to smoothly join two circles. (6) How to draw an ogee (cyma) curve. (7) How to bisect any angle. Creating ellipses mathematically (or with string and tacks). How to draw an ellipse without math, strings or tacks. | |||||||||
Copyright © by Norman Lathrop Enterprises. All Rights Reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means (electronic, mechanical, print photocopying, recording or otherwise) without the prior expressed permission of Norman Lathrop Enterprises, except as permitted by law. |
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