A second life for an old diamond blade

A worn-out diamond blade for concrete or tile can be converted into a universal tool capable of sawing plexiglass, laminate, boards, plywood, drywall and other materials. The resulting cutting wheel is safe, which distinguishes it from hard-tipped saw blades. For the conversion you only need a grinder and a drill.
A second life for an old diamond blade

Materials:


  • worn diamond disc;
  • office glue;
  • stencil for cutting the disk shape.

Disc conversion


A second life for an old diamond blade

To ensure that the reground old disc does not have runout, you need to apply an exact contour for turning. If symmetry is not maintained, then imbalance will occur, and in the future the grinder will be tossed. It is optimal to print a stencil with the outline of a universal disk, and grind the old circle along it.
A second life for an old diamond blade

The template can be downloaded under the video - https://www.youtube.com/watch?v=1yKEZBgGUz8
You need to wipe off rust and dust from a worn disk, lubricate it with dry office glue and glue a stencil. The template must be oriented along the mounting hole.
A second life for an old diamond blade

A second life for an old diamond blade

Next, use a grinder with a cutting wheel to cut off the protruding parts of the disk.The remaining metal must be ground off with a sanding disc, reaching the edges of the stencil. Since the metal is not hardened, everything is cut easily and quickly.
A second life for an old diamond blade

After giving the shape, you need to drill damper holes on the disk along the cuts of the stencil. It is enough to use a 6-8 mm drill. Next, you need to trim the disc to the holes, thereby obtaining 4 teeth. It is better to cut at a slight positive angle so that the formed teeth can quickly bite into materials in the future.
A second life for an old diamond blade

A second life for an old diamond blade

To prevent the saw blade from pinching, you need to set its teeth. If you plan to work only with wood, then it costs more to plant. It is optimal if the width of the resulting cut is 4 mm wider than the cross-section of the disk.
A second life for an old diamond blade

A second life for an old diamond blade

Next you need to sharpen the teeth. An ideal angle would be 3-6 degrees, similar to crosscut saws. In this case, the edge will be more resistant to hard materials and will not wear off in a couple of minutes. If you need to spread the boards lengthwise, then the angle should be increased to 15-25 degrees.
A second life for an old diamond blade

The beauty of the resulting universal disc is that its teeth, although they do not hold an edge for long, do not fly out. If you need to saw a board in a hard-to-reach place, then the tool is ideal. The disk can even make selections in the tree. Its teeth are quickly sharpened, and if you put the circle in the opposite direction and cut towards yourself, the grinder almost does not jump. This is a good alternative to a purchased tool for solving small household tasks.
A second life for an old diamond blade

We cut plexiglass:
A second life for an old diamond blade

A second life for an old diamond blade

We saw and process wood:
A second life for an old diamond blade

A second life for an old diamond blade

Chipboard and multi-layer waterproof plywood:
A second life for an old diamond blade

A second life for an old diamond blade

Watch the video


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Comments (4)
  1. Vlad
    #1 Vlad Guests 27 August 2019 12:19
    4
    Well, if your head is completely out of order, you can also screw on a disk from a circular saw, the Internet is full of photographs of bloody grinders
    1. Sergey K
      #2 Sergey K Visitors September 20, 2019 11:44
      5
      The article says that the solder joints can fall off, and therefore it is unsafe! And as an alternative, a crooked craft made from untempered iron is offered;)

      IMHO, if this is the case, then look for discs without soldering, R6M5, and not like diamond ones - at best, 45 steel, or even St3 the Chinese can use ;) But there are such discs, not many of course, because they are not in demand. I had one like this with the machine included, tried it once, and then installed a disk with soldering and forgot about it like a bad dream ;)
  2. tanunafig
    #3 tanunafig Guests October 7, 2019 01:50
    6
    I had the experience of working with a grinder with a disc on wood... it’s a kicker, one day it was torn out of my hands and I, crossing myself, put this idea aside forever. Now that I think about it, it gives me goosebumps; if I had pulled the Bulgarian towards me a little more, I would have cut myself.fig.
    People, take care of yourself! Don’t take risks for the sake of a penny profit, because each tool is clearly designed for a specific job!
  3. P
    #4 P Guests 18 November 2019 22:46
    3
    if you have extra hands, then go ahead