This jigsaw seems to suffer from the same problem
I can't speak to the diffuculty you're having with that particular model, as I haven't used it. But in general, the stability of the cut depends upon the guide mechanism of the saw, and a three point guide is better than two point or single point. A three point guide assemble will hold the blade firmly locked when inserted into the column, will have a roller bearing that supports the center of the blade path, and will also have a finger pinching mechanism at the base near the material, so the blade can't waffle in the cut. Aside from changing saws, all I can recommend is that you make sure the base is correctly locked in place at an angle square to the blade, when fully extended. Check this with a small trysquare against the base, and look from both sides of the blade. Some folks will even attach an auxiliary base to stiffen theirs up, though this shouldn't be necessary. Then make sure you're using a sharp blade with the correct tooth count for the material you're cutting, and don't force the cut. Let the saw do the work, and make sure you hold the base firmly against the worktop as you cut. If you force a cut with the orbital action on full, you'll get more deflection.
Other than that, all I can say is that I've had good luck with the newer Bosch jigsaws, and the best cut I know of comes from the Festo, but we're talking serious dollars there.
Good luck.
I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
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