Although this is somewhat of a boring subject it is essential information for
even the backyard handyperson.
Overlapping joints are used mainly for a flooring joist that requires joining
and will have the floor boards nailed to it. By joining the joist side by side
you provide quite a strong joint but your line of nails now has a kink in it and
looks very unsightly.
Using a pair of plates (12-19mm ply would be fine) cut to size the joist can be
butted together in line and the plates bolted or screwed & glued to either side
forming a very strong joint.
Half lap joint where the timber is housed out to half thickness for approx 100mm
on each joist. Then when joined together with bolts or screw & glue forms a very
strong inline joint also. This half lap can be cut horizontally into the joist
also be is not as strong.
A strong joint that also looks good is a scarf joint. Here you cut the 2 ends to
be joined at a minimum of 45 degrees or even 30 degrees if your saw will allow.
Then simply overlap screw & glue or bolt .
Instructions for finding the MITREPLANS
On the Mitre10 web site:
- Go to the Mitre 10 Home page
- Hold your cursor over the “Do It Yourself” icon
- Click onto ‘Build It’
- Select the plan of your choice