Forums/Tutorials/Finishing Techniques

Using white wood filler to fill etchings

Josh Reuss
posted this on April 04, 2011 09:43

Here's an etch fill technique I've been trying out with mixed results; using wood filler to fill in the heavy etch on woods and plastics.

whitefill1.jpg

I've used it to fill in text on acrylic and it seemed to work pretty well; as long as the etch to be filled is not too large. On bamboo as shown below it's ends up thin enough you can see the grain underneath but you have a completely smooth surface. From my testing this doesn't work great on the veneers as you have to sand down the face some and the veneers don't give you much depth to work with.

whitefill2.jpg

Step One: I started by cleaning the smoke residue that is on bamboo pieces after laser cutting. I've found
that you sometimes get it mixed into the white if you leave it on. If you have backing paper, it's
better to leave it on until the final step.

whitefill3.jpg

Step Two: Apply enough wood filler to over fill your etch.

whitefill4.jpg

Step Three: I then used some acrylic scrap to spread the filler over the entire etch
and put it aside to dry completely. The more you can get off the sides the less
cleanup you'll have later.

whitefill5.jpg

Step Four: Once the filler dried I started sanding down the surface, trying not to round
over the edges to much and not sanding too deep into the wider letters like the 'P'.

whitefill6.jpg

Step Five: I finished up by applying some wax/mineral oil to the wood, helping clean
away any dust left from the sanding process.

As you might notice my second try didn't come out as cleanly. (bottom one) Above the 'k' you can see a small amount of over sanding and in the 'P' you can make out some of the letter has a thin spot.

Notes: On a glossy surface like hardboard, it might be possible to just use a damp cloth etches before the filler dries completely to remove excess filler. For acrylic I leave the protective paper on both sides and take it off once the filler is dry.

The brand of wood filler I used is Elmer's wood filler, it comes in white as well as darker colors like 'walnut'.

 

Comments

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Otto

Hmm...this gives me lots of ideas. Thanks for sharing! :)

April 04, 2011 16:23
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Jonathan Bowen

Crayons work great for vectors or light etching.

 

Jonathan Bowen

CorSec Engineering

www.corseceng.com

April 05, 2011 16:19
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Josh Reuss
Ponoko

Interesting.. I'll have to give crayons a try on some vector lines, thanks for the suggestion.

April 05, 2011 18:26
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Jonathan Bowen

I use white paint a lot as well. just drop a bit on your finger and rub it all over the etching then wipe the access off. Sometimes it takes a bit to get it clean. Works great for raster designs.

 

Jonathan Bowen

CorSec Engineering

www.corseceng.com

April 05, 2011 18:38
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2GRAYS

Wood can be cut with a paper on top, then there is basically no clean up, if you've let the filler dry and were careful when applying it. In the past, I've also used mosaic cement with tiny particles (metal, plastic, glass) set in it, much like glitter, gives it a cool effect :)

September 25, 2013 18:15