I have given the instructions for small & large stand sizes. The notes relate to the large stand (with alternatives in brackets for the small size). The wood cutting list and fittings are per the chart :-
Part Description Quantity Small size (mm) Large size (mm)
Font legs 2 420 x 20 x 12 500 x 20 x 12
Rear leg 1 380 x 20 x 12 460 x 20 x 12
Extension arm 1 240 x 20 x 12 420 x 20 x 12
Canvas support assembly 2 300 x 20 x 12 300 x 20 x 12
Plywood pivot plate 1 100 x 90 x 8 100 x 90 x 8
Pan head machine screws 6 M5 x 40 both stand versions
Wing nuts 6 M5 to fit machine screws
Plain washers 12 M5 plain washers
Countersunk wood screws 3 No.6 x 25 both stand versions
Small cabinet hinge 1 maximum 20 mm wide, both stand versions.
Picture hanging cord cut to an appropriate length. To be cut and fitted to the assembly to give the required lean angle.
Front legs - drill one hole 6 mm diameter, central to the 20 mm side and 50 mm (40 mm) from one end. Drill a second hole 6 mm diameter, central to and at a distance of 10 mm from the other end. Repeat the process on the second leg. On final assembly, trim the end of each front leg at an angle to relieve the interference with the extension bar.
Rear leg – Screw one flap of the hinge to the end (20 x 12) face. This should open outwards at the final assembly when the other flap is screwed to the pivot plate.
Pivot plate - Determine the central point in both directions. Drill 2 holes 6 mm diameter, central to this cross point and 50 mm apart. At 90 degrees to these, repeat the process, central and 50 mm (40 mm) apart. On final assembly, trim the pivot plate to the angles of the front legs.
Extension arm – drill a 6 mm diameter hole, central to the 20 mm side and 50 mm (40 mm) from one end. Drill a further holes at 50 mm (40 mm) intervals.
You should now have 7 (6) holes spaced evenly at 50mm (40mm) pitch and central to the 20 mm side.
Canvas support - Drill 3 holes along the 20 mm face of one piece and 7 mm from the edge. Glue and screw the second piece to this so that an 'L' cross section is achieved. Drill 2 holes 6 mm diameter central to, and at 50 mm from both ends of the second piece.
The images show the extension arm in the highest position.
The drilled holes will allow you to alter the stand height.
Collapsing the stand for storage is gained by removing one
of the screws holding the canvas support to the side leg.
For larger paintings you could remake the extension arm longer.
Be careful however that the stand/painting does not topple over.
You could of course make a stand even larger and more stable
by following the theme of this tutorial, or by using a table easel