Dumas 1257, Manual

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PT-212
15
Kit No. 1257
BUILDING TIP: I used silver solder (and flux) with my trusty old 40-watt Webber soldering iron to do this job.
It went quick and easy.
BUILDING THE REAR HOUSINGS
NOTE: Don’t forget, you will be making a left and right Housing unit.
85
Cut and cement 1/8” sq. balsawood strips to the edges of LC1, LC2, and LC3 as shown in the
drawing.
NOTE: The wood strips are only cemented to the top and rear edges of LC1 and LC2. Also notice
that the wood strips running along the rear edges of LC1 and LC2 stop 3/16” away from the
bottom edge.
86
Cement LC1 to LC3, then cement LC2 to LC3. (See FIG. 42)
87
Cement LC5 to the top of LC1 and LC2.
88
Sand all of the wood strips flush with the rear edge of LC1, LC2, LC3 and LC5.
89
Cement LC4 to the rear edge of LC1, LC2, LC3 and LC5.
90
GRAB RAILS:
Draw a line 3/16” down from the top edge of LC1, LC2, and LC4.
NOTE: There are two different sizes of Grab Rails needed: 3/8” long, and 1/2" long. The 1/2" long
Grab Rails go on each side of the Housing, while the 3/8” long Grab Rail goes toward the
rear. Note the differences.
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Find the center of each line previously drawn, then mark the location of the required 1/32” dia.
holes needed.
92
Drill a 1/32” dia. (No. 67) hole at each mark previously made.
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Bend the Grab Rails over the full size patterns found in the drawing (See FIG. 43).
NOTE: There are two different sizes needed. Make sure you make one at 3/8” wide, and two at 1/2”
wide.
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Cement the two 1/2” wide Grab Rails to LC1 and LC2. While the 3/8” wide Grab Rail is cemented
to LC4.
You have now completed one of the two Housings needed, the second Housing is built as
a mirror image of the first.