Author Topic: DIY MFT table top and clamping system.  (Read 2274 times)

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Offline J-Max

  • Posts: 2
    • My blog in french.
DIY MFT table top and clamping system.
« on: February 15, 2017, 03:30 PM »
Hi there,

Few weeks ago, I made a jig to drill quickly my replacement MFT table top.
I don't know if this could interest some of you, but the most interesting is probably my alternative clamping system..
I made few videos to explain the principles.



So what do you think, is this interesting ? Do you see anything I can improve ?

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Offline Wooden Skye

  • Posts: 1040
  • My little girl was called home 12-28-15
Re: DIY MFT table top and clamping system.
« Reply #1 on: February 15, 2017, 09:34 PM »
Welcome to the forum.  The hole drilling jig is kinda interesting, but as configured I think it would be really time intensive.  I don't know much about 3D printing, but is the material firm enough where slop isn't an issue?  I would make the template bigger so you can set it up to drill 6-10 holes at a time.  I would also make the jig thicker so that you don't need the white thing to keep bit straight.  Just my thoughts, but I like the creativity.
Bryan

TS 55, (2) 1400 Guide Rails, 1900 Guide Rail, MFT/3, Domino DF 500, 2 domino systainers, ETS 150/3, RO 90, CT 26, (2) OF1400, RO 150. RTS 400, LR 32 set, PS300 jigsaw, 3 abrasive systainers, (2) sys toolbox, (2) sys mini, clamps and other accesories

Offline J-Max

  • Posts: 2
    • My blog in french.
Re: DIY MFT table top and clamping system.
« Reply #2 on: February 17, 2017, 05:13 AM »
Thanks for your comment Brian.
There's a lot of examples of large jigs to drill multiple holes at the same time (like Peter Parfitt's).
Here, after some prototypes, I ended with something different for many reasons.
First, storing a big jig is always a pain. I try to get rid of big jigs.
Second, a big jig takes time to be made, and it's particularly expensive if you print it, if your printer is big enough...
Last, the principle just can not work, because you will need multiple distant reference holes to be accurate,
and a lot of plugs to secure the jig in place. Unsolved problems comes with a multiple hole jig design.

I tried a taller (thicker?) jig, but it did not perform as expected, because the reference is the end your Forstner bit only.
So you can't drill straight. With a shorter jig, you just define the hole location but drill straight problem is the same.
The secondary white (actually light gray) jig takes reference both on the table, the black jig and the drill bit's shaft.
So it is both perpendicular to the surface and concentric with the hole.
As the drill bit shaft is longer than the bit head and distant from the surface, you get a much better precision.


Otherhand, printed parts are very stiff.
I drilled an outfeed table that is slightly bigger than a regular MFT table and it holded the job pretty well.
The jig is still ready for next MFT table tops.

Offline Fury5

  • Posts: 25
Re: DIY MFT table top and clamping system.
« Reply #3 on: March 09, 2017, 09:18 PM »
I think the jig is very clever in its simplicity.  While it may be fairly time consuming to create a large number of holes, the quick set up would make it worthwhile for use with smaller work surfaces.  Kudos!