Hello.
I'm glad to see you on my channel.
Surely many people have seen such a set of crowns for drilling gypsum and particle board.
Usually you need to make holes for sewer pipes or water pipes.
In this video, I will use the circles that people usually throw away as waste products.
Of course, I will use strong material, such as chipboard or thick plywood.
These crowns are made of soft metal and when cutting the chipboard it happens that they
become blunt and get very hot, but they are very easy to sharpen, especially if you have
a vice.
In the store, I bought semicircular files that accurately repeat the profile of the
teeth and I will sharpen these teeth
So, I cut two circles and I'm going to make a grinding wheel out of them.
To drill a hole exactly ninety degrees, I will make a device consisting of three building
corners.
This design is safer than one corner
Now I can make an axis for a circle of a bolt eight millimeters in diameter.
First you need to drill a hole in the bolt to insert the stopper for the circle.
You can see that everything turned out simply and reliably.
Now I need to install a drill, for this I made such a design.
After setting the circle on the drill, you can process the circle from the chipboard
using a normal rasp.
This work requires accuracy and the presence of your respirator, since the adhesive causes
severe irritation of the respiratory tract.
So, now I can glue the sandpaper with the number eighty, on it.
Glue I use
the same as usual.
My video has come to an end, but the theme of using circles is not complete, in the next
video you'll see absolutely fantastic projects that will be made on the basis of circles.
Good-bye, I'm glad to see you again on my channel.