Carry out metal_working_tools_and_machines.pdf

Carry out metal working

1. Metal Working
Processes, Tools,
and Machines
(sheet and small section steel)
Eng. Bob Fairchild
CHAB Stove Camp
The Farm Sept 2012

2. “Raw” Materials
•Plain steel sheet
•Galvanized steel sheet – flat, corrugated, d-rib
•Stainless steel sheet
•Plain steel rod, rebar, bar, angle
•Slotted angle
•Expanded metal
•Hardware cloth
•Steel pipe, conduit

3. Why Steel?
•Cheap
•Durable
•Takes high temperatures
•Not too difficult to work
•Stainless - takes heat better but is harder and much
more expensive and less heat conductive

4. “Processed” materials
•Stovepipe
•Steel buckets
•Steel drums/barrels
•Stainless steel “Cornys”
•Pots and bowls
•Cast iron grates

5. Measuring and Marking
•Scale/ruler
•Tape measure (length and diameter)
•Square
•Protractor
•Scribe (w or w/o blacking and bluing)
•Pens, pencils
•Dividers/compass
•Snap punch
•Center punch
•Sheet metal gauge

6. Measuring tools

7. Marking tools

8. Making Holes
•“Church key” can opener
•Twist drills (lousy in sheet metal)
•Step drills (great in sheet metal) –small
•Hole saws (bimetal and carbide teeth) - large
•Hollow punches
•Hand punches
•Knockout punches
•Foot lever punches

9. Twist drills Step drills

10. Hole saws
Bimetal Carbide

11. Hollow punches Hand punches

12. Knockout punches Foot lever punch

13. Cutting
•Hammer and chisel
•Hand and power snips
•Hand and power nibblers
•hand notchers
•Hand and foot lever notchers
•Slotted angle shear
•Angle shear, notcher
•Circle cutter
•Circle shear
•Hand lever shear
•Foot shear
•Rotary can openers
•Drum deheader
•Angle grinder
•Hand and power saws (hack, jig, circular, chop, …)

14. Snips

15. Nibblers

17. Hand notchers

19. Lever notchers
Hand lever notcher: 6”-152mm Foot lever notcher: 3 1/8”-80mm

20. Slotted angle shear

21. Circle cutter – electric drill powered

22. Hand lever shears

23. Shear machines
Foot shear


Circle shear - manual

24. Drum deheaders

25. Grinding
•Stones
•Files
•Angle grinder (electric, pneumatic)
•Grinding wheel (hand, foot, electric)

26. Angle grinders

27. Bending
•Pliers benders
•Cleat bender
•Sheet metal brake
•Angle bender

28. Pliers benders

29. Bending machines
Cleat bender
(1/2” (12.5mm) 180° fold)
Sheet metal brake (bender)

30. Angle iron cutter, notcher, bender

31. Rolling
(making cylinders and rings)
•Hand rolling
•Slip roller – sheet metal
•Bead roller, edger, flanger
•Ring roller – bar/angle/rod

32. Manual rolling machines
Slip roll Bead roller Ring roller

33. Joining
•Crimping
•Bending (tab and slot)
•Riveting
•Screwing
•Bolting
•Spot welding
•Welding

34. Rivet gun

35. Spot welder