Thread: Stanley 246 MitreBox& Saw

3/16” 28tpi machine screws are available. On your item I personally would rather use the same thread than change to metric.
Is it a thumb screw style?

Originally Posted by Lappa

3/16” 28tpi machine screws are available. On your item I personally would rather use the same thread than change to metric.
Is it a thumb screw style?

It's got a round, knurled knob on top. Do you know where I can get a screw to suit? It doesn't have to be a thumb screw, as once it's in I won't be taking it out again.

Check eBay there are a few guys that break down planes and the like...you might find something similar from a plane that is the same.. I would imagine Stanley would have had multiple uses for the screws they made

I've spent some time over tha last few days stripping & cleaning the box & saw. The saw's been cleaned, handle sanded, oiled & waxed.

DSC_1259 (1024x576).jpgDSC_1260 (1024x576).jpg

After a lot of time on the wire wheel, sanding, soaking in Evaporust & wire brushing all the metalwork is cleaned up. Sprayed the cast iron parts with engine enamel today & in a day or two I'll put it in the BBQ & bake it. When that's done I'll brush the silver paint onto the non machined areas of the fence, as per the original.

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Next will be to make a new sacrificial board & find some 13 x3 flat bar to make the clamps & top tie bar. Still trying to find that elusive 3/16" - 28 TPI screw.

Originally Posted by 62woollybugger

Still trying to find that elusive 3/16" - 28 TPI screw.

Do have a pic of what you are after?

Originally Posted by Gaza58

Do have a pic of what you are after?

This is the screw.
SAM_0563 (1024x576).jpg

After a bit more research Iv'e found it's actually a 10-28 UNS thread. The type of head is not important, anything will do. I've found the correct tap & die on ebay for under $15 from China, so if I cant find a screw, I'll get the die & make something.

I sent an email off to a company in the USA that apparently has the 3/16” x 28TPI. Hope to get a reply tonight.
3/16” is 0.1875” and the 10 gauge - 28 is 0.1900” - hard to pick the difference. Either will do, apparently.

The fence screw on a Stanley 78 plane is the same thread. a little bigger... I would imagine the thumb screws on their other fences are the same thread as well.
Fence Screw.jpg
or the stanley 75 might be a closer size
Stanley 75 Screw.jpg
All these are 3/16 28 or most likely 10g 28

USA firm got back and confirmed its a 3/16" 28 tpi but they dont ship to Australia. Its off a Juki Sewing machine. Going off the part number they gave me I found a distributor in Australia. They are Elizabeth Machines. Phone is 02 97644455. The part number is SS-6121840-SP. They have 4 in stock at $2 each.
The other number that comes up on the web is 3/16-28L=18 (or =12 or =14 etc)
Hope that helps

Thanks Lappa & Gaz, but no luck with either. I found a photo of the sewing machine screw, but it only has a very short section of thread on the end of the screw. I tried the screws from both my 75 & 78 planes & although they are the right pitch, they're both about 0.010" bigger in diameter & won't fit. They're both English made, so that may have something to do with it. I think I'll get a die from ebay & make one.

I think Stanley used the Gauge threads early on and then later changed to the imperial threads... not 100% on this but pretty sure I read that somewhere.

I've just ordered a tap & die off ebay for the princely sum of $11. If the screw I make is tight, I can just run the tap through.

The mitre box & saw is finished (apart from the elusive screw) & back together.

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I made up new clamp pegs & even a new yoke that releases the catch that holds the saw up.

IMG_1767 (1024x768).jpg

All I have to do now is mount it on a base board & wait for the tap & die to arrive from China to make the new screw. Hopefully it should see out another 100+ years.