“I recently built my daughter a book case with maple plywood. I made a homemade pegboard jig for drilling the shelf support hole. On this jig, I used blue chalk to mark the holes for drilling. Some of the chalk got on the maple. I brushed it away. Most of the chalk was brushed off. Some chalk remained.
I did not worry about it at the time. I thought I could get it off later by lightly sanding or washing it off with a damp rag. Big mistake. Sanding did not work. Sanding too much and I would blow through the top layer. I tried spraying with bleach and a card scraper and probably a few other things that I can’t remember now.
Is there something else I could have done?”
Submitted by: afamig
WWGOA Editor Response:
I suspect a solvent, like denatured alcohol, would have been a better wiping choice than water. Put a little chalk on a piece of scrap and try removing it with the alcohol to make sure it works next time. You can find denatured alcohol at home centers and paint stores.
George Vondriska
Managing Editor
Got a woodworking question you need answered? Comment or Email us at editor@wwgoa.com
Maybe a little odd, but for chalk lines on unfinished plywood I find the following (slow) process eventually works. Work a thin paste of wood glue into the chalk line. Wait only a few seconds before wiping off with a clean paper towel. Rub with a damp clean cloth, pressing hard if the line is reluctant to come off. Rinse well with a wet clean cloth and rub with a dry cloth to remove any remaining line.
Just bought several pieces of QSWO, four were marked with pink chalk. I tried air and a toothbrush but that just seemed to drive some of the chalk deeper. Then I tried a 50/50 solution of white vinegar and water and a lot of paper towels. I wet the surface liberally and immediately soaked up the solution trying not to rub it around too much. That worked pretty well on the marks that I had not scrubbed with the toothbrush. Those may need another pass with the vinegar solution.
a bit off topic, but I once had a situation in a remodel with new carpet; snapped a line (red chalk) for something now forgotten. Line was freshly refilled and between the excess chalk on the line and maybe the line laying on the carpet as I rewound it , the carpet stained with the chalk. Had to get the new carpet cleaned ! Live and learn (sometimes the hard way).
I've used colored chalk for various applications and have found that the one color that's easiest to clean/hide is white chalk; i.e., if you don't want to see it later, use white.
I had read somewhere that Blue chalk was considered permanent and Red chalk was temporary and easier to remove.But i haven't had any experience with either.
How do I make a drawer from a horizontal tree log ?
I've never done it but you could try compressed air and a toothbrush to get it out of the grain. just a thought.
Several cycles of vacuuming and blowing with compressed air does it for me. Vacuum first.
If it’s possible, try using compressed air. I find it works well especially using an air nozzle that you can control the force of the airflow. Obviously starting out with a low flow and increasing the flow as needed.
A couple other options I would have tried before using a liquid wash would be compressed air or brushing with a fine wire brush. With regard to the latter, I've often used a drill-mounted wire brush with very fine stainless steel wire as well as a clothes brush with very fine brass wire to clean out/cleanup grain on refinishing projects.