Monday, February 21, 2011
Sliding Bevel
A sliding bevel is a simple hand tool made up of a stainless steel blade, a plastic or wooden handle and a locking mechanism. The blade can be adjusted to any acute or obtuse angle and locked in place, so that the angle can be repeatedly marked on other pieces of stock.
T Halving Joint , Dove Tail Halving Joint (21 February 2011)
T Halving Joint
- Mainly used where an intermediate timber meets an edge timber. It is formed by fitting the end of one piece of wood into the recess in the other, with half the thickness removed from the area shared by the two pieces.
Mark out the width and depth of the recess in the edge timber and cut squarely to the depth line with a tenon saw. Use a chisel or pre-set router to remove the surplus material from between the cuts. The depth should be cut twice, the first time to remove the bulk of the material, the second time to carefully take it down to the correct level.
Mark and cut the other piece as if it were for a corner halving joint.
Dove Tail Halving Joint
- For use where a stronger joint is required than the simple T halving joint. The sides of each half of the joint are cut at an angle of about 30 degrees so that when the joint is assembled, the separate pieces are locked together.
Mark out the width and depth of the recess in the edge timber as for a T halving joint. Then mark the angle for the dove tail, this can be achieved by using an adjustable square or by measurement. Cut the angled sides of the dovetail down to the depth line with a tenon saw. Use a chisel or pre-set router to remove the surplus material from between the cuts.
Mark and cut the other piece as if it were for a corner halving joint. Then mark each side of the projecting piece with the same dove tail angle down to the shoulder line. With the timber secured in a vice, carefully cut the angle down each side to the shoulder line, reposition the timber and cut the sides along the shoulder line to remove the waste material.
O.S.H(Oppucational Safty and Health) 16 February 2011
On Site Safety
- keep the site tidy
- lookout for hazards
- keep long hair tidy and not use loose clothes on site
- follow instructions
- right attitude and team work
- aware of surroundings
- isolate ares
Electrical Safety
- use R C D ( residual-current device )
- do not use damage leads
- making sure power swatch off before plugging in any power tools
- beware of lead cut
- keep power tools away from lead
- keep leads out of water
- treat every wine as "live"
- safety check for tools (every 3 months)
- know where safety switches are
- P P E (Personal protective equipment)
Safe Lifting
- keep back straight
- bend knees
- use right tools and machinery if necessary
- good footing
- keep load close to body
- 25 kg MAX per person
- clear path
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