Chalk

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frank123

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Feb 5, 2012
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A quick question before I waste resin trying it to find out it won't work:

Has anyone tried powdered chalk (specifically sidewalk chalk) to colorize PR and maybe PU resin as well?

I'm wondering about both the utility as a color and the change in the physical characteristics of the casting.
 
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I have never tried chalk but I would have a few questions. Why would be the first one. Second what type mold will you use. That stuff is unforgiving. It gets all over everything. I use it alot with chalk lines on the jobsite and the blue and red are really stain producing animals. Next it will be rough on your tools just as sand would if you try that too. I think someone here tried colored sand. May want to do a search on that.

With todays powders and dyes you can achieve any color you want and it will mix with the resin. I would bet chalk would not mix with resin very well and be left with alot of air pockets. Just my thoughts.

But as they say, nothing ventured nothing gained. Give it a shot and post your progress photos. It just abit of resin.
 
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John, I use chalk to chalk files for draw filing when knife making and have dust from it to clean up afterwards which made me wonder about using it as a pigment. A few colors I kind of like.

I was hoping not only to maybe get the color I like but also maybe have it modify the resin enough to give a somewhat better slip resistant surface that would be both better grip than a polished resin surface and more chip resistant as well for pens in rough use situations.

I'm really not very concerned with its effect on my tooling since I use carbide and only make a few pens as a hobby but don't know how it would thread and such, or if it would keep the resin from setting, so I thought I'd ask to see if anyone has used it to save some resin and time if it is a bad idea.
 
frank123 said:
John, I use chalk to chalk files for draw filing when knife making and have dust from it to clean up afterwards which made me wonder about using it as a pigment. A few colors I kind of like.

I was hoping not only to maybe get the color I like but also maybe have it modify the resin enough to give a somewhat better slip resistant surface that would be both better grip than a polished resin surface and more chip resistant as well for pens in rough use situations.

I'm really not very concerned with its effect on my tooling since I use carbide and only make a few pens as a hobby but don't know how it would thread and such, or if it would keep the resin from setting, so I thought I'd ask to see if anyone has used it to save some resin and time if it is a bad idea.
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Well Frank I did a quick search and here is one post you might be interested in. Seems like it has been tried and it works. I am sure if you do a more intence search here using the search feature you my find more interesting threads on this subject. Good luck and give it a try.

http://www.penturners.org/forum/f14/chalk-line-chalk-96118/
 
It'll work just fine. Like anything else, be mindful of how MUCH colorant you put into the resin. JUST LIKE any other colorant, be it mica pearl, acrylic paint, GOLD foil, etc., etc., EVERY addition to resin will EVENTUALLY cause the resin to fail.

Your job is to find the equilibrium of what looks REALLY good, and how much makes the resin TOTALLY unusable.....That's where the art lives, my friend.

Keep working....and GOOD LUCK!
 
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