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A Safer And More Efficient Finger Joint Sled

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Blog entry by Dan posted 08-17-2017 08:43 PM 1324 reads 0 times favorited 7 comments Add to Favorites Watch

Well, after kicking some ideas around this is what I’ve come up with for cutting my hinge joints. The one here will cut 3/32” slots, very accurately I might add. By changing out the white board on the right side bottom, it will adapt to different size slots.

It is adjustable to square from all angles. The clamp shield component slides back and forth on the sled rails and with a heavy duty stick on felt pad to press against the work piece, works fabulously well. Wish I knew how to make Youtube videos to demonstrate this.

Here are some pictures

With this special clamp it is not necessary to screw the 1/8” plywood backing on. The clamp generates more than enough force to insure flatness. This in turn makes the process faster and easier.

This is a picture of the bottom with the 1/4” whiteboard. I can adjust the finger width by moving this piece side to side. The wood piece in the slot is removable. This will enable me to make the first cut towards the center without using a different sled.

This is a picture of my sled clamp. Because using this clamping device is easier and much faster than other methods it should promote safety because of the attached safety shield.

There are some additional updates on my new method of clamping up the hinges under my project Hard Maple Soft Maple Tough Little Hinge.

-- If I knew who it was and what they are doing perhaps I could defend myself...



7 comments so far

View doubleDD's profile

doubleDD

6739 posts in 1855 days


#1 posted 08-18-2017 01:01 AM

Nice improvements Dan. The adjustability and shield are great features.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

View Dan's profile

Dan

630 posts in 1704 days


#2 posted 08-18-2017 01:13 AM

Thanks Dave. I’m trying to post a short video.

-- If I knew who it was and what they are doing perhaps I could defend myself...

View Dan's profile

Dan

630 posts in 1704 days


#3 posted 08-18-2017 03:01 PM

https://vimeo.com/230105056

This was a one take. I was having a little difficulty getting the 3/32” slot fitted over the nub because I didn’t want to block out the video.

-- If I knew who it was and what they are doing perhaps I could defend myself...

View Redoak49's profile

Redoak49

2851 posts in 1801 days


#4 posted 08-18-2017 09:02 PM

If a picture is worth a thousand words, a video is worth a million. Thanks for the video it really helps.

Why did you leave the throat plate off the saw.

View Dan's profile

Dan

630 posts in 1704 days


#5 posted 08-18-2017 11:32 PM

Thanks Redoak. I leave the throat plate off so I don’t have to worry about a high spot throwing things off.

-- If I knew who it was and what they are doing perhaps I could defend myself...

View Dan's profile

Dan

630 posts in 1704 days


#6 posted 08-25-2017 03:45 AM

latest addition to sled. A bolt action pin enabling user (me) to slide out of way when making first cut.

The bolt (pin) itself is intentionally and conveniently not the full width of the slot. I have learned that wood pins are difficult to get a tight fit so this way I just move the piece to the right till it touches bolt, make sure its square and cut away. Much faster and as you can see with those recently cut hinges, very accurate.

-- If I knew who it was and what they are doing perhaps I could defend myself...

View Dan's profile

Dan

630 posts in 1704 days


#7 posted 08-26-2017 04:39 PM

here is the video before the bolt action pin was added. I am building an updated sled which I will post also.


View on YouTube

-- If I knew who it was and what they are doing perhaps I could defend myself...

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