Obviously, the genuine plastic guides are no longer available, but what ingenious methods have others applied to simulate the guides? Maybe thin plastic sheet such as Delrin (used for harpsichord plectra), then heated and bent into shape? Or a small leaf spring of some kind? All it has to do is push the saw blade lightly against the opposite guide.
I still have mine. Gets occasional use away from home.
I don't think the *clippy thing* is essential. Just keep the blade to one side of the slot manually.
My first problem was having to find a tenon saw with a blade deep enough to reach the bottom of the guides. In the era of throw away saws with stiff blades and huge choice of tooth intervals, this may not be an obstacle.
Possible. As I recall, the jig came with a couple of spare guides, but I kick myself that I didn't buy 50 of them at the time, because they would have lasted my lifetime. When new guides are installed (i.e. not worn down after extended use) this little jig was truly useful. Now that they ones in my jig are worn completely flat, the saw blade wobbles too much for the thing to be much use (which is why I've never bought one of those mitre boxes).
I've also been thinking of modifying it to accept the kinds of carbon brushes used in old-fashioned car dynamos or powerdrills, but with stronger springs. So far, I've thought of everything that could possibly be adapted, including plastic clothes pegs.
But a mitre box doesn't have any guide 'clip' to stop the saw wobbling in the groove. The clip was the JointMaster's secret weapon.
On the contrary, back then I sawed many pieces of wood nice and square. I reckon it was and is a genuinely useful tool. But the clips are both its secret weapon and its Achilles' heel.
First of all, learn to hold the saw flat against the guide.
Secondly, a decent and new mitre box doesn't rattle around the saw. Better mitre boxes even have adjustable guides at the top, which you can adjust down to blade thickness, not just kerf width.
I have one with guides that have had no use. You?re welcome to them I could post. I am throwing the whole thing away as it has no white plasti c legs that seem to be a vital component
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