Author Topic: Another way to hold upper arm on 788 in raised position  (Read 2549 times)

alien11

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Another way to hold upper arm on 788 in raised position
« on: June 08, 2012, 10:01:09 am »
Hello everyone:

After seeing Steve?s description of ?Bigfoot? I decided to share my idea of how I support the upper arm of my 788. I call my invention ?Bent Toe?. It?s hard to imagine how Bent Toe could be any simpler; it consists of two small blocks of wood hinged together. I started with a block 0.75? thick x 2? wide x 3? long. It could be thinner; the only limitation is that you don?t want the screws holding the hinge to penetrate through. Cut this piece into two. The smaller 1? long, the larger 2? long and fasten them back together with the hinge. We?ll call the side with the hinge the underside (or sole). That?s it! Except I wanted to get a little fancy so I embedded a small magnet into the upper side of each block. The magnets are 10mm diameter and I embedded them flush with the upper side; the one in the small block is roughly centered in the face, in the larger block I placed the magnet ?? from the hinge.

Without magnets you can use a wrap of tape to fasten the small block and Velcro to hold up the larger block.

The magnets hold Bent Toe to the underside of the saw?s upper arm. I placed it as far from the blade as it will go and the larger block facing the blade.  With both pieces held up it is out of the way, but a flick of my thumb on the end of the big block closest to me and that end drops onto the extreme far end of the table. Now by slowly raising the arm, the block of wood will be brought to vertical and it will ?lock? in that position holding the arm up. The magnets are strong enough that vibration does not cause them to release. Alternatively, you can raise the arm and then drop the support block.

How did I arrive at the name ?Bent Toe?. Well, it kind of looks like a bent toe went it is in use; and, it?s a play on the French word ?bientot? roughly meaning ?quick?.

I hope this is clear. Questions are welcome.

Here's a link to some pics:   http://sdrv.ms/KlEWce
« Last Edit: June 08, 2012, 10:10:33 am by alien11 »

Offline Dakota Saw Dust

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Re: Another way to hold upper arm on 788 in raised position
« Reply #1 on: June 08, 2012, 09:27:43 pm »
Really like your 'bent toe ".  My objection to "big foot" is in it's placement so close to the blade. it might be ok for installing a new blade but not threading through a new entry hole on say a 12 sq. blank.  Your approach gives more available space from the blade to your "toe"  Thanks for the idea. It's on my to-do list.  :)

Offline Judy Hunter

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Re: Another way to hold upper arm on 788 in raised position
« Reply #2 on: June 08, 2012, 09:38:24 pm »
Great Idea.  Even I could figure out that method.
I'm from North Dakota

Offline Ablade

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Re: Another way to hold upper arm on 788 in raised position
« Reply #3 on: June 10, 2012, 05:04:36 pm »
I used a block of wood for awhile, but then got a Jim Dandy.  Sold the JD when a tech at the DeWalt service center simply tighten the bolt at the pivot point on the upper arm.  Try this.  It works.  Adjustment is very, very slight so go easy.  I have heard all the argruments about how this could damage something or another inside the machine.  For over five years now nothing has happened to my saw.  Hope this will save money for a few people who are willing to try something new.   :)

Offline JERMAN46

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Re: Another way to hold upper arm on 788 in raised position
« Reply #4 on: June 12, 2012, 04:08:55 pm »

 

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