Applying Decals with Background Masking in SOLIDWORKS – Part 2

Article by James Swackhammer created/updated August 12, 2019

Building on the previous article about adding a decal and masking the background, there are occasions where we need to take masking a step further to get  the desired result.

I’m going to add another decal below my Javelin decal. This is the same procedure of right clicking in the open area and clicking Add Decal. Browse for the required picture and select the face. I’m going to position and size this to match the previous decal.

Additional decal added

Additional decal added

Back to the Image tab and the Mask Image area. We again want to remove the background and just have the text on the new decal. The option we did last time was to select Use Decal Image Alpha Channel, but that doesn’t work. We can do a Selective Color Mask.

Here we can click on the eye dropper and select the background. This usually works out but this time we have some left over background. Next step is to use an Image Mask File. This requires a secondary image.

Applying a colour mask

Applying a colour mask

Open up the Windows program Paint or Paint 3D, you can then open up the decal image.

Launch application

Launch application

 

We are going to Save As without modifying, I recommend changing the name slightly and then the Save As Type to Monochrome Bitmap. You will receive a prompt mentioning the image quality reduction, so just select Yes to this.

Mask applied

Mask applied

Back to SOLIDWORKS, with the Image Mask File we need to browse for the need picture we created. This should remove the background at a better quality than before. If it doesn’t there is also an Invert Mask box that can be selected.

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James Swackhammer

James is a SOLIDWORKS Technical Support Application Expert based in the Javelin Oakville head office

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