It is sometimes useful to determine the precise location of a hole in order to adjust trace placement. In order to determine the precise location of a hole, zoom in on the hole using the zoom bar to the left of the preview and the scroll bars to the right and bottom of the preview. Once zoomed in to the maximum extent (slide bar is all the way to the top), use the scroll bars to move the red-cross hole indicator to the left edge of the preview window. The y-component of the hole can be determined from the ruler to the left of the preview window. The same approach can be used to determine the x-component of the hole using the horizontal ruler at the top of the preview. When zoomed in to the maximum extent, the ruler is split into 0.01" increments. It is therefore possible to locate the hole to about +/- 0.001".

Hole diameters are derived from the printed image. When the diameter is less than 0.050", the most appropriate of the following 13 drill bits is used: 0.016", 0.020", 0.0225", 0.025", 0.0276", 0.0295", 0.031", 0.033", 0.038", 0.0394", 0.0441", 0.0465", 0.050". When the diameter is greater than 0.050", the hole is milled.

You will receive in copper what is displayed in black in the driver preview window with the FR4 behind it. The printer driver includes a mirror option that can be invoked at anytime. It is suggested that you print to the driver with out using any application specific mirror option. Then, use the printer driver mirror option if required.

PCB Singles uses the bottom left 4" by 6" region of the content that is printed by default. If your trace-work lies within the top 5" of the page as printed to a standard 8.5" by 11" piece of paper, the default PCB Singles preview will be blank. Use the x and y Location adjustments in the Options tab to move your trace-work into view as described in, How do I adjust trace placement?

Color can also cause the preview to be blank. The Black / White Transition slide bar in the Advanced tab determines how the driver translates colors to black or white as a function of brightness. Yellow is translated to white using the default setting but becomes black if the slide bar is pulled to the left. Yellow traces would cause the preview to be blank until the transition was adjusted.

The options tab includes x and y Location options that allow you to tune the placement of your trace work on the PCB. The Preview button on the bottom right corner will appear after modifying these options. Use it to see the adjusted placement.

PCB Singles uses the bottom left 4" by 6" region of the content that is printed by default. An x value of -4.5 and y value of -5 in the Options tab tells the driver to use the top right 4" by 6" region of standard 8.5" x 11" output.

While PCB Singles produces 4" x 6" boards, lines of small holes can be placed to allow sub-boards to break apart. In this way, the 24 square inches can be applied anyway the user sees fit whether it be multiple instances of the same design or completely independent designs.

The blue border is a margin indicator. Traces can be in the margin but holes should not be.

Since the red-cross hole indicators are drawn in discrete pixel space, they can only be approximations of the true center of your through-holes. Zoom into your trace-work using the vertical slide bar to the left of the preview in order to get a better representation hole centers from the indicators.

To order a PCB, login to My PCB Singles and use the My PCBs link to view available tracework. The Order link corresponding to the tracework to be purchaced will start the ordering process.

A PO number is a user defined "Purchace Order" number that appears on the invoice and shipping slip. It is not a required field and is used only as an internal reference number to you.

Login to My PCB Singles and use the My Orders link to view all orders. Use the Invoice link corresponding to the order to be printed to view the invoice. The invoice page includes a Print link.