Nice video from Lynn Lacey this morning comparing techniques.
https://youtu.be/Lb7XYWkc48M
https://youtu.be/Lb7XYWkc48M
Nice video from Lynn Lacey this morning comparing techniques.
https://youtu.be/Lb7XYWkc48M
Thanks for both of those links, gentlemen! As someone who still has much to learn and has yet to turn acrylics, these go a long way on educating me.That was a great link and great visual aid!
There was another link (which I thought I had) about the color of paint, and how the "color" of paint affects the outcome of cast blanks.
Found it: http://www.penturners.org/forum/f19/seeing-believing-reverse-painting-151785/
In the video you linked - He did refer to "discoloration" in the "painting the tube only" after gluing with both CA and Epoxy. That "discoloration" is not actually discoloration but rather shows very clearly where glue is NOT adhering to both the tube and the blank. This is Very Important to understand. It is this point that is one of the causes of blowouts in wood and sometimes cast blanks. The "discoloration" is where there is NO adhesion. It is adhering enough to prevent him from twisting or pushing the tubes out, but the force of 1000, 2000 or 3000 RPM and the cutting of the chisel on blanks that are barely glued in - is what causes blowouts in so many cases.
The "discoloration" is actually the clear blank being foggy/unsmooth/rough from drilling. Take a clear blank, drill it to where you see the rough inside, and coat the inside with CA, epoxy, clear oil or water and suddenly it will show clear.
On his "Tube Only" it was the small area of contact points of the glue that were clear. Notice how fractional that area is. This is what happens in most gluing situations, and why some people swear by polyurethane glues - the glue expands and makes contact in almost all areas between the tube and blank where as CA and epoxy does not. The disadvantage to poly glues are that the tubes must be taped in, or the expanding glue will sometimes push the tube out as it hardens.
That was a great link and great visual aid!
There was another link (which I thought I had) about the color of paint, and how the "color" of paint affects the outcome of cast blanks.
In the video you linked - He did refer to "discoloration" in the "painting the tube only" after gluing with both CA and Epoxy.