Glass saw, how to use and how to clean?

The glass saw is widely used in the work of the electrician to drill panels, walls, frames, PVC, masonry, plaster, tiles, ceramics and even glass! There are cup saws for all types of material and in addition to those already mentioned, we also have a diamond cup saw that can cut high-speed steel, stainless steel, and various other materials. In this article, we will talk about the correct use and cleaning of the glass saw, come on guys!

Why use a glass saw?

The cup saw is a tool used when you need to drill large holes, that is, when there is a need for much larger drilling than conventional drills can do. Several characteristics must be taken into account when purchasing a glass saw, such as the type of material to be drilled and the size of the hole to be drilled. We will leave an important tip, the 19mm, 22mm, and 32mm cup saws are the most used for the installation of pushbuttons and traffic lights.

How to use a cup saw?

During drilling, if the drill speed is inadequate, it will certainly reduce the life of the saw. To pierce some materials, it is important to use cutting oil to ensure adequate cooling of both the workpiece and the saw, this serves to prevent the saw from losing its cut early. Here on the site, we have an article talking about these fluids for saw glass and if you wanted to know a little more about the subject, we recommend this complimentary reading.

Discover the Starrett cup saw ejector spring

How to use the cup saw?

It is common to have to drill a larger hole in conduits and conduits and therefore, there are saw cups with numbering suitable for inches that must be used in conduits. To perform the correct drilling with a cup saw, the following steps must be taken:

  • Wear suitable protection, gloves, and goggles
  • After marking the location, use a drill with a smaller diameter as a guide
  • Fit the saw to the holder and then both to the drill
  • Drilling respecting the type of material and RPM indication

The use of suitable tools is very important to perform good activities and to guarantee the safety of the electrician and that of the other people who are in the place.

How to clean a glass saw?

Now we are going to give you tips on how to clean the glass saw and we are going to present an incredible solution to remove that excess material that gets stuck inside the glass saw after drilling.

As everyone already knows, after drilling, it is very common for the cut material to stick to the saw. In this example of the image below we have pierced a very thick MDF board and you can see, the material was very tight.

Material caught in the glass saw after drilling.

To remove this leftover it is necessary to use a screwdriver and even so in some cases, the removal of this leftover is a very difficult task as it is so tight that the material remains! So what to do? The solution is quite simple and it is in the Starrett ejector spring, which must be fitted next to the guide bit as shown in the image below.

See the correct way to fit the ejector spring

Now that you know what the ejection spring looks like and where it is attached, we will now show you how it works. The first difference is that during drilling it is possible to feel the pressure that the spring exerts causing the material to be pressed during the making of the hole and as soon as the drilling is finished, the ejector spring prevents the material from getting stuck in the cup saw, as shown in the following image.

Drilling result with the use of the Starrett ejector spring

As already mentioned, drilling with a cup saw is widely used by electricians and some accessories such as this ejector spring from Starrett can make the job much easier. Speaking of accessories for cup saws, in this video below the Mundo da Elétrica channel you can know the OPA support that is used to increase the hole of cup saws, it’s worth checking out!

And so we finish one more article and if you have any questions, constructive criticism or suggestions, please leave in the comments that we will be happy to read and answer.