Architectural Flashing Supply
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Manual brake setup and operation · Lesson 3 of 4

Manual brake setup and operation: methods and worked application

Setting up a shop brake step by step, then forming the FlashDraft Drip Edge in 24 ga galvanized: setback, marks, bend order and limits.

You will be able to: Level and set up a brake, set setback and clamping pressure, prove them with test bends, and plan and form a FlashDraft profile.

8 min · 11 slides · 5 questions

All lessons in this module
Slide 1 of 11

Level and crown first

Tennsmith states that the brake will not bend properly if it is not level.

Its base is set slightly crowned in the center, and checked so an equal amount of light shows at either end.

Setting up and proving a brakeSix steps in order: level and check the crown, set the clearance, set the clamping pressure, make a test bend, bend the piece, verify the angles at both ends and the center.1Level itCheck the crown:equal light atboth ends2Set clearance2 t within fourgauges of capacity,1.5 t if lighter3Set pressureSet the ends, thenmatch the centerwith a scrap strip4Test bendBend scrap,check both ends,adjust and repeat5BendBend line at fingeredge; overbend ifspringback needs it6VerifyAngle at both endsand the center,against the drawing

Six steps in order: level the brake and check the crown, set the clearance (2 t within four gauges of capacity, 1.5 t if lighter), set the clamping pressure, make a test bend, bend the piece, and verify the angles at both ends and the center.

1
Level the brake; equal light at both ends shows the crown is right
2
Set the clearance from the metal's thickness
3
Set the clamping pressure at the ends, then match the center
4
Test bend in scrap and adjust
5
Bend line at the front edge of the fingers; overbend if springback requires it
6
Check the angle at both ends and the center against the drawing
The order of work on a shop box and pan brake, from the Tennsmith HBU48-12 manual and the module's lessons. Do not skip the test bend.

Sources

Videos for this lesson

What this video shows: Sheffield Metals and Van Mark show how to bend a simple drip edge on the Van Mark Metal Master 20 portable brake.

Video: How to Bend Your First Piece of Metal Flashing With a Van Mark Brake by The Metal Roofing Channel, on YouTube. Chosen from the video's published description.

What this video shows: Sheffield Metals and Van Mark show how to bend a W-valley and a vented ridge flashing from 10 ft lengths of 24 ga metal on the Metal Master 20.

Video: How to Bend Sheffield Metals Detail Flashings With a Van Mark Brake by The Metal Roofing Channel, on YouTube. Chosen from the video's published description.

Glossary

Crowning
Tennsmith sets the brake base slightly crowned in the center; Baileigh's crowning adjustment sets the bending leaf for an even bend along its full length.
Test bend
A 90 deg bend in scrap near each end of the brake, made to check the setback before the job.
Overbend
Taking a bend a little past the angle wanted so it springs back to that angle.
Bend schedule
The list of bends in a profile in order, with each bend line position, turn angle and direction.