Brak
metal fabrication layout tools
//-->, Order this information
dimensions for the stretch-out of a cylindrical object, then, are the height of
Next,
cutting the sides of the angle at D and E. With D and E as centers and a radius
PROTRACTOR. Draw a base line
In all
At this point,
All Rights Reserved. Complete the line by scribing from the other prick punch mark in the opposite
Do the same from point
well as perpendicular to the base line. 2-12) the base line is 2
erroneous measurements results in a part being fabricated that does not fit the
Bisect
and you, Figure 2-6.-Scribing an acr/circle with dividers. Exert enough pressure to hold the point on center, slightly
The lower edge gives you the approximate circumference of any
thumb, as shown in figure 2-6. When the method shown in view B of figure 2-12 is used to divide a line into
2-10). in the scale by increasing its angle of slope from the baseline and dropping
procedure you will find useful when making layouts. In the method of layout, known as parallel line development, the
Some of the
fiber-glass ducts. the required width of the pan for the other dimensions, draw the fourth side
CHAPTER 2 LAYOUT AND FABRICATION OF SHEET-METAL AND FIBER-GLASS DUCT
var Tv=''; var Itr=''; Select a point on this line for one comer of the drip pan layout. angle that the number of spaces required will divide evenly into the space
are square or rectangular, like a drip pan or a box. Erect a perpendicular through this point, forming a 90-degree angle. Therefore, you must have knowledge not
same manner as a regular layout scale, but the lower edge is graduated, as shown
point, and swing an arc through the circumference at C. Continue to step off in this manner until you have divided the circle into
When
inclining the dividers in the direction in which they are being rotated. Combination squares are. and in tiptop shape, and you will be able to construct 90-degree angles,
An edge of the metal upon which you are working is used as the
only in laying out patterns but also have the skills required to cut, bend,
google_ad_height = 60; Incidentally, you may even use a full 6 inches
flashing, gutters, and at times, complete sheet-metal roofing systems. fabricating a perpendicular. inches. to determine the circumference of a circle or arc. point is C. Using C as the center of a circle with a radius equal to CA, scribe
know how to construct angles of various sizes and to erect perpendiculars. To construct angles other than 45 degrees or 90 degrees, you will need a
fabricate parts and fittings frequently in the shop or to modify them to fit
With B as a center, draw an are
draw a line connecting the points D and A and you have fabricated a 90-degree
a line at right angles to one end of the base line. a line through the points where the arcs intersect and you have erected
depending on usage, see that you check it for accuracy, as shown in figure 2-3. In many Naval Construction Force (NCF)
var sz=''; var bkgd=''; To scribe a circle with a radius larger than your dividers, you should select
var agt=navigator.userAgent.toLowerCase(); if (bV>=4) { Using
as shown in figure 2-5. the edge of the scale as possible by tilting the scriber outward. 2-1). the V, and you have constructed an angle of 70 degrees. google_color_link = "0000FF"; Use B, then, as a
TRAMMEL POINTS. With the straightedge, draw lines from point 6 to point A, 5 to
Using each
else if (Tv.charAt(1)=="/") var vr='v=1.0J'; required distance, and tighten the thumbscrew. reading would be the circumference of a circle with a diameter of 3 inches
Set the vertex of your protractor on the mark and then scribe a V at the desired
June 2020. You'll find an array of metal cutters like bench shears, hand shears, mini saws and tin snips. items, which are simply installed or assembled, Steelworkers are required to
Some of the more common layout tools that you will use in performing layout duties are as follows: scriber, flat steel square, combination square, protractor, prick punch, dividers, trammel points, and circumference rule. Sharpie Professional Chisel Tip Black Marker, Markal Dura Ink 5 Micro Tip Permanent Marker, Markal Dura Ink 20 Retractable Permanent Marker, Jamey Jordan Series Layout Template Kit, 3 piece, Jamey Jordan Series Layout Template Set, 4 piece, Jamey Jordan Series Mig Weld Gun Bead Roll Stencil, Jamey Jordan Series Rose Bead Roll Stencil, Jamey Jordan Series Bearded Skull Bead Roll Stencil, Jamey Jordan Series Owl Bead Roll Stencil, Jamey Jordan Series Derringer Pistol Bead Roll Stencil, Jamey Jordan Series Scroll Bead Roll Stencil, Jamey Jordan Series 73-87 C10 Bead Roll Stencil, Jamey Jordan Series 67-72 C10 Bead Roll Stencil, Jamey Jordan Series 60-66 C10 Bead Roll Stencil, Jamey Jordan Series 55-59 GM Truck Bead Roll Stencil, Jamey Jordan Series 48-54 GM Truck Bead Roll Stencil, Jamey Jordan Series Straight Layout Template, For use with standard Sharpie markers and Markal Dura-Ink 15, Includes center punch, retractable scribe, retractable knife, pen, Includes center punch, retractable scribe, retractable knife, Non-slip barrel and cap designed to be used with gloves, Extended micro tip reaches 5/8 of an inch deep, Useful for laying out rivets or bolts evenly, Use inverted style when two panels are held tightly together, Layout 5 different radius arcs for bead rolling, Quickly and easily trace designs to sheet metal. In using this method, draw line AB to the
Tv=""; Figure 2-2.-Using a square to cinstruct perpendicular and parallel lines. The FLAT STEEL SQUARE is a desirable tool for constructing perpendicular or
You should use DIVIDERS to scribe arcs and circles, to transfer measurements
the circle, like the one shown at B in the illustration. Back | Up | Next, CHAPTER 2 LAYOUT AND FABRICATION OF SHEET-METAL AND FIBER-GLASS DUCT. blueprints and sketches is paramount in layout work. delicate instruments and are of little value if you handle them roughly. required to fabricate the job being laid out. When the method shown in view A is to be used, you will
direction of movement (fig. Plastic Radius Gauges. when working with sheet metal. 'cgi-bin/ads/'+adcode+'.cgi/'+vr+sz+rfr+Tv+ To scribe a circle, or an arc, grasp the dividers between the fingers and the
square is 90 degrees and the other edge is 45 degrees. For short lines, use the steel scale as a
google_alternate_ad_url = "http://www.tpub.com/tpub468x60.txt"; Makes metal as easy to mark as paper ; 5 basic sheet metal layout tools; Carbide marking scribe; 6in steel ruler; 5in steel square; 6in compass/dividers; Automatic center punch; This 5 piece kit contains the basics you need to get started accurately measuring and marking sheet metal. For the applicable
For longer lines, use a circumference rule or a straightedge. Itr='
