A simple MFT fence... finally

[rmwarren]

Seems like my process is to dream up something complex, iterate several times (each time de-overcomplicating it) eventually reaching a straightforward design that works.

After 4-5 fence designs, this one can be aligned to the dog holes in 30 seconds. It works because the hole pattern in the MFT tops aligns exactly with the MFT edge. Pictures = lots of words:


RMW

 

[Duckler]

What am I missing?
Is this for those without a chop saw?

 

[tsmi243]

It's for people who want the track saw stuff to be completely removable, without needing to worry about the grid being 100% accurate when you put it back on.

As long as your two holes for the track dogs are parallel to the edge (which is easy), you can plop down a fence anywhere you want in 5 seconds, and it's within 1/25 of a degree of dead square.

It's also more about the thought process than the result.  Some of y'all aren't going to get it, and that's OK. 

 

[rmwarren]

It's for people who want the track saw stuff to be completely removable, without needing to worry about the grid being 100% accurate when you put it back on.

As long as your two holes for the track dogs are parallel to the edge (which is easy), you can plop down a fence anywhere you want in 5 seconds, and it's within 1/25 of a degree of dead square.

It's also more about the thought process than the result.  Some of y'all aren't going to get it, and that's OK.

You got it. I have to set up for a cut, break down for other operations, set up again. And, I like to fiddle with ideas.

Also, I am those without a chop saw, or any place to store/use one.

RMW

 

[mino]

Nice!

A note:

Those 0.15mm over 224mm you measured would be pretty bad actually - it is about 0.5mm over a 600mm wide cross cut which is unusable for laminate work, for example.

BUT. You are too hard on yourself - it is cummulative systemic error from 5 cuts + the random error => the actual accuracy of the setup is up to 5-times better than that .. which is pretty good.

 

[rmwarren]

Nice!

A note:

Those 0.15mm over 224mm you measured would be pretty bad actually - it is about 0.5mm over a 600mm wide cross cut which is unusable for laminate work, for example.

BUT. You are too hard on yourself - it is cummulative systemic error from 5 cuts + the random error => the actual accuracy of the setup is up to 5-times better than that .. which is pretty good.

Totally missed that, thanks for pointing it out. I'd plugged the numbers into KM Tools calculator and was directed to shift the fence .004 cm but I didn't stop to think it all thru.

Bottom line is it's square enough for my purposes and easy to align anywhere in that column of holes. I've got the 48mm center row of holes in both directions on each section of top it will work just about anywhere.

RMW

 

[sancho57]

I just got the TSO guide rail hinge up grade, when installing it you have to move the factory stops to adjust the up graded hinge plates. So I  took some dogs used the holes in the MFT to square the holes in the MFT fence to the rail. Now Its dead nuts square everytime I remove and replace the guide rail and fence.

Fairly easy to do. I used the one time wood pecker tri angle to check square, the TSO triangle will work just as good if not better as they have up graded it.

plus the TSO hinge plate up grade once aligned make the guide rock solid and wont move or need adj if you bump it, change the height of the rail etc