Fusion 360 Calibrating 1:1 Prints

The print dialogue in Fusion is relatively simple, you hit print, it sends your drawing to the printer, magic!

What may not be obvious, is what happens behind the scenes, and how the drawing is scaled.

Here’s how printing from Fusion 360 desktop client works.

  • Fusion 360 prints 1:1 when the paper size of the drawing and the printer match (i.e., A4 Sheet to A4 printer = 1:1)
  • Fusion 360 scales down sheets that have a mismatch (i.e., A3 sheet to A4 printer = scaled to fit)
  • Printing setup & scaling is based on the Operating System (Windows or Mac) default settings for your printer. Some printers are better than others at getting this scaling right.

For optimal 1:1 prints, the printer’s default settings need to be set up to allow for 1:1 prints. Some drawing borders have geometry that crosses into the print margins, and in some instances the printer will scale the drawing down to fit the printable area. In this instance the printer setup needs to be changed to accommodate this. Setup can vary from one printer or manufacturer to another.

Option 2

Publishing a PDF and printing the PDF is also a good workflow.

Option 3

A third option for printing, is to print from the web (Fusion Team). In this example, I’m going to do a test print to my tiny A7 thermal printer.

To do this, from Fusion, find the drawing in the data panel and click on the “Version” drop down, then click “View details on Web”.

Click on the drawing thumbnail, the “Viewables” will be generated.

Now click on the Print icon and hit “Print” on the preview.

Choose the printer, paper size and scale. Note that my scale is 64 (more on that coming up).

This will print to the selected printer at the scale selected.

How did I get my print to scale?

I mentioned at the top of this post that I was printing on my A7 thermal printer, it’s a tiny hand held printer. I figured that if I could get this to print 1:1, any printer should work!

My first print was set to a scale of 1:1, I set the “Pages” to “Custom” and “1” as shown above, which means that I would only print 1 page. This first print when measured, showed a value of 39 mm for a known value of 25 mm.

To get the second print right, I took 25 mm divided it by 39 mm which gave me my scale of 64.

25/39 = 0.641

Below are my results.

Some notes:

I chose to use this A7 printer for a few reasons, one of them is that there are no settings for it in Windows, it defaults to a page size of A4>A7, essentially shrinking anything down to fit. There are no controls over the margins or print area. The web client print settings let me override the defaults. You may have noticed that my drawing view crosses over the border, this was to ensure that I got as much of the view onto the tiny A7 page

A72.9 x 4.1 inches74 x 105 millimeters

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