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7th September 2012, 11:09 PM #1
Shop-made Rip fence secured by Magjigs
I throw this open to all suggestions and comments...
I've a Triton Mk3 table with the original aluminum rip fence. In seeking a way to secure a shop-built fence to the Triton without using the bolt down method, I fell upon my Magswitch feather board for inspiration. My thoughts, therefore, is to fabricate a fence from MDF with a 100 x 60 rip fence. The width and height of the fence is just now an estimate as I want to be able slide a tenoning jig along the fence. Especially along a fence without the impairment of bolt screws impeding the rear slide vertical fence of the tenon jig. So, as I said, I thought about the Magswitch and have considered using two 30mm Magjigs secured in the 19mm fence slide. The specs from Magswitch suggest that there is more than enough sheer strength to secure the fence to the Triton top. I appreciate that the Triton steel is thin and that I may have to apply additional steel sheeting and glue that underneath the table top. The set-up from blade to fence, for me at least, will remain unchanged as I measure from tooth to the fence from the both the forward blade tooth and the departure blade tooth. Have never trusted the stick-on Triton measure.
Anyway, before I race out and purchase two Magjigs, I want to see what the fraternity think of the idea - especially any pro's and con's.
Cheers,
Ian.
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8th September 2012, 04:52 AM #2
I use two 30mm Magjigs to secure a longish, home made, pine, feather board to my Mark 3 Triton. As feather board holding devices, the Magjigs are stunning successes and I now use the feather board as a matter of course when I would not previously have bothered if I had to clamp it in place.
However, it is possible to move the featherboard laterally when the Magjigs are engaged if I really want to give it a solid sideways push. ie the magnetic holding power is very good but it is not glue.
As you infer, perhaps at issue here is the thin sheet material in the Triton table top and that maybe gluing additional steel underneath may help. (I also wax the table top regularly and so that may also not be helping the clamping effectiveness.)
Likewise, perhaps a fence employing, say, four 30mm Magjigs instead of the two that you suggest may help but, of course, at about $32 per Magjig, that is starting to make the exercise a little expensive. I suspect, though, that on something as long as a fence, there would be too much moment on the fence in normal operation to make it reliably rigidly held to the table top with just two Magjigs.
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