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Author Topic: TRION PSB 300 EQ - getting it to cut straight  (Read 178 times)

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TRION PSB 300 EQ - getting it to cut straight
« on: March 21, 2021, 09:28 AM »
Hi this is my first post.  I apologise in advance if this is a well worn topic but I am new to this site a quick search didn't show up anything relevant.  Like many on here, I rely on the accuracy of Festool. For me there has been one notable exception; my Trion PSB 300 EQ jigsaw. I never bonded with this machine.  It has mostly sat in its box unused because whatever I tried (FSG blades, new base runner etc) it seemed determined to not cut straight or perpendicular.  I was even thinking about buying a Mafell to replace it. 

Recently I had to use my jigsaw to make a cut in oak, as nothing else would fit.  I installed a new FSG blade, adjusted the carbide guides, pressed in a new splinter guard. It was then that I noticed that the splinter guard sat at a slight angle with the base runner.  On further inspection, I found the blade was perpendicular but the base had a twist in one of the forward arms: looking at it from the front, one arm was rotated slightly upwards on the blade side.  The base runner and splinter guard had the effect of amplifying this run-out.  In addition, the base runner could not sit fully flush at the back due some protruding casting flash. I managed to straighten the front of the base and cleaned off the flash so that the base runner sat flat.  I then tested the cut using the guide rails on 18 mm plywood It now cuts straight and perpendicular!   Finally!

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