Tracing supplies #2 to #6 soft graphite pencils colored ink pen graphite paper ruler t-square transparent tape or painters tape
There are two methods of transferring the design to your work surface that either use graphite paper or a graphite pencil rubbing to the back of the pattern paper.
Both of these products are laid under your paper pattern so that the transfer side, the graphite side, is against your work surface.
As you trace the lines of your pattern on the pattern paper the carbon or graphite paper leaves a fine line on your work surface. Both of these tracing papers should be used carefully as they can not be easily removed from your work surface after the burning is complete.
Of the two I do use graphite paper with its soft pale gray coloring especially on gourds, paper mache and darker woods. For working on basswood, poplar, or birch I prefer the rubbed graphite pencil method.
What type of wood or natural surface you are working can decide what color of tracing paper you use. Shown above is white graphite paper for a walnut end slab and black graphite paper for an oak slab.
GRAPHITE PAPER TRACING ON AN IRREGULAR SHAPE
Wood, gourds, and even cut leather do not necessarily come in a perfectly squared regular shape. In this sample the pattern is being traced to a live-edge, oval basswood slab that is very irregular in its dimensions.
Begin by determining which edge of the oval you want at the top of your project and which edge will therefore become the bottom. Position the board on your work table accordingly.
With a ruler and soft #2 pencil, mark a pencil line vertically across the board as your center reference line.
Measure and mark the center point of this line with your pencil to find the center point of the horizon line. Place a square edged form, as a notepad, against the vertical line with the top of the form touching the center point just made. Make several pencil marks along the top of the form. This give you two or more points to position your ruler to create the center horizontal line. Pencil in the center horizontal line.
Hold your printed pattern up to a light source so that you can see through the pattern. Fold the pattern into quarters, matching pattern lines of both sides to each other and on the top and bottom to each other. Crease your pattern with your fingers along the fold lines.
Match the fold lines of the pattern paper to the pencil guide lines on your board. Use transparent tape or painters tape to secure the pattern paper to the surface.
You can now slide a piece of graphite tracing paper under your pattern paper with the graphite side against the wood. Using a hard H pencil or ink pen trace over the pattern lines.
When you remove the pattern and graphite paper from your board you will have a soft gray line pattern on the wood.
PATTERN RE-ALIGNMENT MARKS
There will be times when you will need to add more detailing from your pattern to your wood by working a second tracing.
Your first tracing may only need the outlines for large, general areas that will be shaded before you work any detail lines. There is little point to tracing those detail lines wit ht he first tracing as the shading tonal values will cover them up.
So before you lift your pattern from your surface after the first tracing, use scissors to cut several reference areas along the edge of the pattern paper. My cuts are made on the top right and bottom left corners of the pattern. With your soft, #2 through #6, pencil make several pencil guidelines at these reference area, moving the pencil from the paper onto your burning surface.
When you want to add more tracing lines simple re-align the pencil marks on the pattern with those left of the wood. Tape the pattern back down to the wood and you will have your pattern in the exact position in which it lay with the first tracing.
TRACING TO A LIVE BARK EDGED SLAB
Live edged slabs, although rectangular, are not necessarily square of both end cuts. Start by determining which end cut will become the top edge of your project. Align that edge with the grid makings on a self-healing cutting mat. Work your alignment marks for the pattern from the mat grid, not from the sides or edges of the board.
The direction of the wood grain for your pyrography blanks is determined by the direction in which the slab was cut from the original log. A tree adds a new layer of growth each year, made up of vascular bundles which are similar to open drinking straws that move the fluid through the tree. How those vascular bundles are aligned on your blank determines the wood grain direction.
The grain direction of your wood blank does affect your pyrography strokes and tonal values. End-grain cuts, as the top oval, often burns unevenly because of the open grain and growth rings. The rectangular slab, shown in the back, is cut with the grain of the wood, making it perfect for fine detailing and multiple tonal value work.
The top, oval basswood board is an end-grain slice that is cut across the circumference of the log, cutting all of the vascular bundle straws. Imagine looking straight down onto a hand full of drinking straws. What you see is the cut, open tops of those straws. End grain burns can appear spotty, and have irregular fine line detailing because of the end grain and growth ring openings.
The background board is cut with the grain of the wood, meaning that the tree was milled vertically from root to tip. Here you would see that same hand full of drinking straws from the side, showing the full, long length of the outer straws.
Both samples shown are called live-edge or live-bark cuts, meaning the outer, newest growth rings and the bark have been left on the board as a decorative frame for your work.
SANDING THE WOOD BLANK
Sand paper from 220 to 320 grit Sanding pads Foam core fingernail files Heavy brown kraft paper
The smoother your wood surface the finer and straighter your detailing lines can be worked. Always sand with the grain of the wood using progressively finer grit papers. End with a good polishing of the wood surface using heavy-weight kraft paper.
Your wood surfaces will need a light sanding to create a smooth surface for the burning. Use fine grit paper, 220 to 320 grit, to remove the fine ridges and loose fibers on the wood. Coarser sand paper, lower than 220 grit, can leave sanding lines that can affect how the quality of your burn lines. Even fine ridges will cause your tool tip to skip or move as you pull the stroke resulting in uneven or non-straight lines.
Sanding pads have a foam core and are flexible making them great for curved surfaces as on a wood plate or the routed edge of a plaque. Available at your local drug store foam core fingernail files are a nice addition to your tool kit. They come in a variety of grits and are excellent for working deep carved detail areas of a wood shape. Foam nail files can also be used to clean your one temperature brass tips.
Bring with your coarse sand paper and work through to your finest. Always work any sanding device or tool with the grain of the wood to avoid creating fine scratches in the surface. For our photo sample the wood is being sanded in a circular motion to match the growth rings of the end-grain slab.
Heavy brown kraft paper as a large grocery store paper bag makes an extremely fine grit sanding tool and is often my final sanding media. Remove all the sanding dust with a clean, lint-free cloth before you begin your next steps.