Don't confuse these with the fixed frames for supporting
canvas which should technically be called 'strainers'.
These are far superior allowing for adjustment of tension
after stretching. Using the wedges which fit into slots
at the corners the tautness of the canvas can be increased.
Don't over tighten initially as the tension will change
according to environment and humidity and too much tension
can put a stress on the canvas.
For smaller sizes, our Economy Lightweight stretchers are extremely
good value for money. Made from solid natural pine, the pieces
are finger split to minimise the risk of warping. They measure
1.75" by 5/8" with a raised lip to lift the canvas.
Sizes range from 8" to 40".
For a larger, more durable stretcher we also carry a range of
Gallery Stretchers. These top-of-the-range stretchers are ideal
for professional artists looking for a robust support for their
canvas with a lip generous enough to hold the cloth well away
from the wood. They are made from top quality European pine
with a laminated wood construction to minimise warping. They
are 36mm deep with a slightly rounded edge to the raised lip.
They have expandable corners and are provided with wedges. Larger
sizes - from 100cm - are morticed to accommodate cross bars.
The cross bars have routed slots to enable them to be used vertically
and horizontally. We hold stock of sizes from 40cm to 200cm
TO ASSEMBLE A STRETCHER FRAME
Lay out the bars and cross pieces making sure that all the faces
with two rounded edges are upwards. These form the side that
the canvas should be stretched across.
Slot the cross bars together and then fit the edge bars using
a mallet if necessary. Do not use any glue. Make sure all the
corner joints are as close as possible and sand off any rough
Before starting to stretch the canvas ensure that the frame
is squared up by measuring the diagonals. When the angles are
true the diagonals will be of equal length.
Stretch the canvas over the frame and attach with staples or
If you decide to use wedges to take up the slack in the tension
of the canvas you will need two at each corner and two for each