Monday, August 17, 2020

The Marples No 6809 Combination square and miter cutter

A recent find that spurred my previous posts on small work holders, it came along  some of those :-)

It is a combination cramp and mitre box for cutting 90 or 45 degrees cuts.
It was targeted to the picture frame shop works.
It will handle up to 2 in wide pieces and up to 1-3/4 in thick pieces

Came complete with original box and papers.

The recommended crosscut saw is a 12 inch Tenon saw.

Instruction are for both the No 6808 Jr and 6809.
The difference? 6808, sometimes referred to as the Junior,  only did 45 degrees cut

Top illustration is 6808 (2 posts), bottom is 6809 (4 posts)

Hum, did the silica packet and Rust preventive paper worked??

The top is remarkably in good shape.
Those metal sliders (2) on each post are to set the maximum depth of cut.
They are adjusted to touch the back bar on your backsaw.
You can then do lap joinery, cut small dadoes etc.

The bottom having bare machined surface on the casting got some rust.
This were the rust stain comes from on the papers inside.
For a tool about 60 years old, not bad at all.


How accurate is it?

Lets find out.
The tools used in this experiment:
Stanley miter square No 16 Type 3
Groz 6 in Machinist square grade B
Veritas set up blocks set
Flat screwdriver and measuring tape  

Notice the differences in width for the saw slot?
NEVER insert or remove the saw from the top.
ALWAYS from the side.  The larger area is to protect the saw set on the blade.
I seems to notice that on later models the slot is larger.

The saw I'm using is a Jackson Warranted Superior, 
a Disston second line, 12 X almost 3 in small crosscut saw.
Yes was probably 3 in new.  That plate fit well.

The saw resting on its back spline.
Maximum stated capacity is 1-3/4 in, so you need a 3 to 4 in saw.

Just barely clear the bottom kerf in the casting.
But if it was, should adjust the stops up a bit to cleared, or you will damages the teeth

I thought of using a setup block for ease of adjustments.  
Two issues: When screwed in, the guide toe in, grabbing the block, and...

Of course at rest the saw being slightly below the deck, 
we loose some height, barely half inch left of our 9/16 in.
Not very precise measurements but you get the idea.

Adjusting the saw stops, the saw spline is resting snugly on it.
Pushing down it stay put, with no tendency to jump.
Getting to line them up just so, could be a tad finicky, so I would dedicate one saw to it.


Here is a nice touch.  The Tommy bar is secured in place, 
meaning that you can rotate it while the jig is flat on the bench

Lets cut some wood

That saw I'm using has practically zero set, not cutting thru it, 
just establishing a kerf,  two 45s and one 90

Bang on, according to Mr Stanley


Bang on

Yes, make a nice 90

and the 90 also pretty well bang on


The obvious question now becomes: How old is it??
Truth is, researching Marples history can get a tad confusing, so many name permutations, mergers and etc not to mentioned Williams Marples and Joseph Marples both made tools, both are related but ran different companies.  A good place to wrap your head around this is found here 

An earlier Green Shamrock version...
When did they start and stop making green tools??
My current guesses are 1959-196XX
Pic from Ebay

... and its box
Pic from Ebay

On this later version (Record) they stopped machining the top surfaces.
I have seen examples with no machining on the bottom also, mostly Record Ridgway.
This example is missing one guide on rear 90 degrees post.
Good luck finding replacement...
Pic from Ebay

From 1958 catalog.

From 1959 catalog
Showing 6806 and 6807 which is a 14 in tenon saw to be used with 6806
and 6808 Jr for which they recommended a 12 in backsaw No 2526
Extracted from Internet archives

The 6806 was bigger, why it use a 14 in saw, and had reversible jaws to accommodate sprung moulding.  If you ever tried to cut crown mouldings on the flat, you know what I mean. 
The steps allows the moulding to be held at the correct angle, enabling it to cut precise 45 miters.
Jaws are shown reversed to the flat side.  There are no provisions to adjust the saw out of the groove if it is too tall for the top posts.  No 6808, later replaced by MR6807 are smaller hence were called Jr. 
pics from  Antique tooltique

1961 catalog

1962-64 catalog

1965 catalog, new logo
These catalog covers pics are from a reference site

Interestingly, the logo on the box looks like the logo on the 62-64 catalog, while the logo on the inside instruction sheet looks like the new one introduced in 1965.
That would seems to indicate a mid 60s tool.

The No 6808, seems to have been replaced by the MR 6807 (MR as in Marples Record or Marples Ridgway) which was manufactured in later years under Record.  They could not called it 6807 since that was already in use for a backsaw.
Again, only cut 45 degrees



Looks early 80s
Notice the depth stop are long gone.
All three above pics from  Antique tooltique

Marples Ridgway version of same tool, MR6807
Pic from Ebay

Marples Ridgway Bahco Record tools Ltd. 
Irwin who are you?? Cue music :-)



But wait there is more!!
It also came with another tool in its box, the seller telling me that they went together (Huuh??)
Well not with that tool, but for the next step when you have cut your frame pieces and are assembling them, with a cramp.  Got both for $20 so sure, why not.

The Elwood multi purpose cramp (British for Clamp)

The instruction sheet is pasted on the box cover

How I figured it is to be used.
Mine is missing the steel cable that came with it

Different packaging

Shown complete with the cable, about 5 or 6 ft long
Pic from Ebay


Since mine still has the patent No on it, lets look it up
GB 798851 on espace.net

There it is, patented on 30 Jul 1958.
You can see how the cable is pulled, tightening the frame as you screw it in.
Screen shot.

Since my seller believed that they went together, it is very possible that they came to him together since whomever bought it years ago probably did bought the mitre guide and frame cramp about the same time frame.  Everything seems to point to early to mid 60s for the pair.


So how good are those mitre gizmos?  Well honestly, if they get me close, that is good enough cause they go next on my shooting board.  You need a clean surface, no saw fuzz to check for 90 and 45 anyway, so yeah, awesome :-)

Bob, with yet another mitre cutting tool.

PS I read somewhere on line in a forum discussing this tool that they were garbage, broke it trying to put the saw in, only good as a corner clamp.  Really? NO, it's a real precision tool when used correctly with a proper real saw well tuned.  Oh and the operator, fired yourself and get someone that known something about tools :-)

2 comments:

  1. I recently picked up a Stanley 2244A MITRE box and it's missing one of the rollers for the saw support. Before I make a replacement I wanted to check to see if they are available to purchase somewhere.

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  2. Finding replacement parts for older tools is always a hit and miss propositions. You may find one, but good luck.

    Bob

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