UNT College of Visual Arts & Design – Metals: Sawing

UNT College of Visual Arts & Design – Metals: Sawing

Hello and welcome to the University of North
Texas’ Metalsmithing & Jewelry program video series. In this short video, we will show you how
to use your jeweler’s saw to cut and pierce metal. First, you want to be sure you have the right
size sawblade for the thickness of metal you are cutting. Measure your metal with a B&S gauge. In this case, we will be using 20 gauge copper
sheet. Consult this chart to determine the correct
size sawblade. Typically, the thickness of metal should equal
around three teeth on the sawblade. The saw blade needs appropriate tension in
the saw frame, so keep pressure on the saw frame while inserting the saw blade, making
sure the teeth are pointing away from you and towards the handle. Lightly wax the blade to improve sawing. Before beginning to saw, precisely scribe
your design into the metal (or you can glue a paper pattern onto your metal). Just in case your saw blade breaks, always
be sure to wear safety glasses and keep your hands safely away from the cutting area. For beginners, sawing will feel awkward at
first but you will get the hang of it quickly—it just takes practice. To begin sawing, have your metal flat on your
bench pin and keep your saw frame vertical. Be relaxed and let the tool do the work—don’t
ever force it. Follow your scribed line consistently on one
side of the line. This improves accuracy and reduces how much
filing will need to be done later. Most designs will require “piercing” the
metal to saw out an interior section. The saw blade can be inserted through a drilled
hole in order to do this. Before drilling, center punch the exact location
of the hole to be drilled. Keep the punch perpendicular to the metal
and lightly tap it with a hammer (or use a spring-loaded automatic center punch). Make sure the drill bit is larger than the
saw blade being used. Either a drill press or a flex shaft can be
used to drill the hole. Be sure to lubricate the drill bit, securely
hold the metal, and apply slight pressure while drilling perpendicular to the metal. To begin piercing, insert the saw blade through
the hole, clamping with tension in the saw frame. Lightly lubricate the blade and begin sawing
as before. If you have a sharp corner in your design,
continue the saw moving up and down in place but without trying to move forward. Slowly turn the metal. Begin sawing forward again as the design requires. And that completes our basic introduction
to sawing and drilling. We hope this short video helps make your experiences
safe and productive!

local_offerevent_note September 22, 2019

account_box Matthew Anderson


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