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Thread: Mitre slots in GMC table saw.
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29th March 2014, 01:09 PM #1Awaiting Email Confirmation
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Mitre slots in GMC table saw.
HI.
I bought a GMC table saw new at auction to dedicate to one process.
However i need to build a cross cut sled to do up to two dozen short cuts, and the mitre gauge tracks ( for the sled runners) are out of parallel with the plane of the blade by 1.5mm over the width of the fully extended blade.
BUT there doesn't seem to be any way to adjust this.
I've had a good look but there's a round steel bar in the underside of the section of the top to which the saw is attached and it all seems to move as a unit. The steel bar is housed in a track in underside the top & the saw screws to the bar.
Can anyone tell me the adjustment process for the mitre guage track/blade alignmnet please?
Regards,
Rob.
ps I started to file away parts of the removable top panel which also has a mitre sled track, but thougth i'd ask for help before going any further.
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29th March 2014 01:09 PM # ADSGoogle Adsense Advertisement
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29th March 2014, 06:42 PM #2
Not familiar with the unit you purchased, but GMC went bust in about 2008, so if you bought the saw new, it's been kicking around in the box for a while.
Table saws tend to come in two varieties.
In one, the saw raise and fall and tilt mechanism, arbour and motor are bolted to a solid table top and the whole assembly bolts onto the case/stand. Blade and mitre slots etc are aligned by adjusting the saw mech relative to the tabletop, generally by releasing the mechanism mounting bolts slightly and tapping with a rubber mallet or similar.
The other variety has the entire saw mech attached to the frame or case, and not really adjustable. The tabletop also bolts to the case/frame, and adjustment is achieved by slackening the tabletop bolts and tapping the top to move it relative to the mechanism and frame/case. It is sometimes necessary to lift the top and expand the untapped mounting holes a mm or so to get enough clearance to adjust the top, and you may have to source socket head bolts to replace hex head ones if the bolts clashing with the frame limits the amount of adjustment you can achieve.I used to be an engineer, I'm not an engineer any more, but on the really good days I can remember when I was.
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