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PLASMA CUTTING SERVICE
For rapid
prototyping and small scale production of items made from flat metal plate
up to 1/2 inch thick we use a
computer controlled plasma cutting
table from Torchmate. All the necessary computer drawings can be made in-house
by the FNFAB design team or customers can provide their own Auto CAD
(dxf) format drawings via
email or flash drive from anywhere in the world.
COMPUTER
CONTROLLED ENGRAVING. We recently
added Torchmate's metal plate marker to our system.
The plate marker allows us to
stamp part numbers on steel parts as they are being cut, however, it
can also be used to perform CNC engraving to create letters,
pictures, and company logos. As with
plasma cutting, all the necessary
computer drawings for the engraver can be made in-house by the FNFAB
design team or customers can provide their own Auto CAD (dxf) format drawings.
Plate marker photos/videos
click
here
  HOW
THICK IS 14GA STEEL AND WHAT DOES A PLASMA CUT LOOK LIKE? Here you can see that 14ga steel is
slightly thicker than a quarter. Manufacturers standard thickness is
.0747 +/- .005 for hot rolled steel and +/- .007 for cold rolled. You can also see in both of these photos the
quality of the plasma cut on a straight edge. The quality
of the cut will vary with speed, material
thickness, material quality, and torch tip wear.
WHAT ABOUT CUTTING 1/4 INCH THICK STEEL?
Here you can see some sample cuts in quarter inch
(1/4) thick material. The large rings pictured here were part of a
large production run of water pipe
flanges. Often cut quality for a job like this is not critical and
we can get away with a little rougher cut. The cut speed and frequency at which
consumables are replaced can be adjusted in order to offer more
economical pricing when cut quality is not an important factor.
 HOW
CLEAN CAN THE PLASMA CUT LOOK IN 1/4 inch?
When cut quality is more important fine adjustments to speed and
material type (quality) can be made in order to achieve a better
quality cut. Cut quality will be best when all of the
consumable parts of the torch are brand new and material being cut
is perfectly is clean and flat.

WHAT IS THE THICKEST MATERIAL YOU CAN
CUT?
With our Thermal Dynamics Cutmaster 151 we can pierce and
cut up to 1/2 inch steel. The cut is not as clean as some of the
thinner materials but works fine for most applications. If a
machined finish is needed we can 'rough' cut material with the
plasma then machine it to specifications as required. This saves a
lot of expensive machining time as opposed to machining parts from
scratch.



Going from rough drawing to metal.
Lee C. from Georgia came
to us with a preliminary drawing of a skull and cross bones Team XXL
logo for his ATV radiator grill. He asked us to turn the drawing
into a silhouette for CNC cutting, make it fit into a 12 by 8.5
rectangle, enlarge the skull, and add more detail. Here you can see
the before and after jpeg drawings of the logo and finally, the
finished product in raw steel. Now that we have a usable jpeg
image, we can scale it up to just about any size. BE SURE TO VISIT
TEAM XXL'S WEBSITE AT:
http://www.teamxxl.com
Team members interested in ordering
can contact Lee at
dirtbmw20@knology.net
   Here's a screen shot of
the CNC software at work and a picture of Lee's skull design in the
middle of a cut. There is also an example of how we can change the
scale of a drawing to create larger parts or parts of different
proportions. The first skull logo is 8.5 by 12. The second is 11.875
by 12.25. Each have been scaled to fit certain radiators. To see a video of the skull and cross bones being
cut by the Torchmate CNC plasma cutting table at FNFAB
click here
and give it time to load.
 How does lettering effect cutting
costs? The price per unit of
a particular item is based on many factors, one being the number of times the plasma cutter has
to 'pierce' or start cutting. Each time a hole, letter, or area of
detail is begun, the plasma torch is slightly worn or 'consumed' and
the cut time is also increased because the torch pauses at the
beginning of each cut in order sense the material height, calibrate
to pierce height, preheat the material, and finally pierce. On
14ga material this takes about 5 seconds per pierce. The more pierce
points an item has, the longer it takes to cut and the quicker the
consumables wear.
Can an image be enlarged?
At first glance, you
can hardly tell the difference between the drawing on the
left and the 14 ga steel part on the right. The original image,
however,
was only a few inches tall and our finished piece is nearly 2 feet
tall. When a small image is enlarged it creates pixilation which
needs to be cleaned up. What may look like
smooth curves in small scale can become 'stop sign shaped' in larger
scales if the image is not properly processed.
   Fast
Custom Metal signs. This sample sign represents our standard 6.5 x 11
usable area raw metal sign. This sign with 2 inch letters and
a choice of clip art images and
fonts makes a great quick economy "custom" sign.
Available in unfinished steel and intended to rust, this sign lasts
for decades in the harshest climates and even gets "better" with
age. Ships in 1 to 2 days.

ADDRESS SIGNS
We can mix and match clip art to come up
with a custom address sign for you.
To see more
ADDRESS SIGNS (click here)
   _small.JPG) Guitar
Hanger.
Hang your guitar on the wall
with this original idea from FNFAB. Available in Electric or
Acoustic design.

  GUITAR BUSINESS CARD HOLDER.
Perfect for any music shop, guitar
store, or your own desk. Two sizes available. 12 inches tall or 8
inches tall.
  LINEAR
SIGNS.
These make a great window sill advertising.
Simply set them on the window sill inside facing outward. Linear
signs are 2 or 4 inch tall letters and can be up to 8 feet long.
Most 2 inch window sill signs are 14ga steel. Larger signs may
require thicker gauge metal. Available raw, primed, or painted.
 If you feel creative, you can provide us with a drawing of your own. We'll turn your
drawing into alpha numeric line code or "G code" that the CNC plasma cutting table can read. We can
convert hand drawings and sketches into 3D CAD drawings or CNC ready
(2D) .dxf format drawings the old fashioned way by
interpreting and re-drawing them or we can convert .bitmap format
scanned images such as tracings into 2D .dxf format images digitally
to prepare them for conversion to G code for CNC plasma cutting. If
you already have Auto CAD compatible .dxf files (such as Turbo CAD
format) we can convert them directly into .dxf format cut paths and
CNC ready G code reasonably quickly assuming the drawings are made
with cutting in mind (i.e. stencil font lettering and contiguous
images).
 Can't
draw you own idea with a computer? Some
customers can provide professionally produced and stenciled CNC
ready .dxf format digital media for conversion to G-code........but
many people have no idea what all that even means. They just want a
sign. For example, Yolanda's sign for her
husband's garden started as an idea and a hand drawn sketch
that was not to scale or even finished. We
reproduced the drawing in 3D CAD and as in many cases we suggested a
few changes and then made it into a 'stencil' (every part in a
"male' sign like this has to touch something to stay together).
As in many cases, she got to preview the finished drawing printed on paper in full scale
before cutting.
  _small.JPG) Have your own idea for a plasma cut
product or fabricated part?
Maybe you just have an idea and want
someone else to come up with a plan. Call us!
 Refrigerator
Magnet
Designed to hold cell phone
cases, this rack could also easily hold keys or other items. Uses 1"
wide strip magnet that is 14.5 inches long. Item measures approx 15
inches wide.
  POWDER
COATING vs PAINT. We offer
powder coating on large or special orders. These are an example of
Matte Black powder coating. We can also powder coat red, yellow, or
white. Powder coating is tougher than paint but requires baking the painted
items in an oven at 400 degrees for 20 minutes.
 Super Duty
Decorative mail box.
Angelica specified that she needed a
SUPER rugged wall mounted mail box that didn't look like a safe.
Most economy mail boxes are so thin that you can dent them getting
them out of the box they came in. Even some fairly expensive
high-end boxes at the super stores are mostly plastic and can't
possibly last long in harsh environments. This mail box is
constructed of 14 gauge steel with a palm tree pattern chosen by
Angelica cut permanently into the front.
  Specialty
Golf
Clock. Here's a sample of a
limited edition golf
gift clock that we fabricated for Lois of Covina, California using
artwork provided by Signtorch with some modifications to make it
'plasma friendly'. The clock is 14ga steel and has a quartz movement
with second hand. It measures 8.5 inches wide 6 inches tall.
  Custom Mail Box.
Here's a super duty mail box designed by Ted Athans for his body
shop business. This box is made of almost indestructible welded 14
gauge steel plates. The "Athans" logo is
plasma cut into the face then backed by a plate of stainless steel.
DESIGN
YOUR OWN CUT-OUT.
Kathy P. wanted a
Humming bird design added to her front and back porch. This is an example of a "dry run"
of Kathy's own design. A spring loaded felt pen enables us to
plot the machine path directly onto the material to be cut so we can
review the programming. By doing this we can verify the cutting area, sequence, and scale before proceeding.
In this case we found several items in Kathy's drawing that were not
"plasma friendly" and we were able to identify and correct the
problems before cutting.
_small.JPG) _small.JPG)   _small.jpg) Here,
Kathy's own humming bird pattern (seen plotted above)
is cut from
14ga steel. Some of the 'drop out' parts willbe trimmed and
spot welded to the face to complete the design. To keep little
fingers from being chopped off by steel vines, Kathy asked us to add
perforated sheet to her porch divider. We filmed the parts
being made. To see a plasma cutter movie
click here.
 Simple art work
added to existing clip art.
This is an
example of some items we produced
quickly using some existing art work modified slightly to fit a
customer's needs. In the case, we were able to take one of our
existing products and add some simple
text.

Chihuahuas in the powder coat oven.
Please don't try this at home! We have a small scale powder coating
facility and can powder coat and bake colors red, yellow, white, and
matte black on site.
Small or large plasma cutting runs
_small.JPG)
MORE PHOTOS CLICK HERE
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Fred Nelson Fabrication
850 W Foothill Blvd #36 Azusa, CA 91702 Phone: 909-772-5441
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Fred Nelson Fabrication
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