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The Coolidge Chronicles #22: Part 6 - 1952 Delta Multiplex 40-B 12"-14" Radial Arm Saw Rebuild

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Blog entry by darthford posted 87 days ago 689 reads 0 times favorited 4 comments Add to Favorites Watch
« Part 21: Part 5 - 1952 Delta Multiplex 40-B 12"-14" Radial Arm Saw Rebuild Part 22 of The Coolidge Chronicles series Part 23: Part 7 - 1952 Delta Multiplex 40-B 12"-14" Radial Arm Saw Bearings MRC 202SFF 12 »

After I recovered from Famous Dave’s BBQ I continued with the assembly, here’s my progress from the evening shift.

Before shot of underside carriage track, wow what was growing out of that top right hand bolt a mold colony?

After shot, much improved. I’m hoping the grey gloss enamel will be easier to keep clean vs the factory yellow primer.

Its starting to look like a radial arm saw again

Close up of the new precision ground hardened rods the carriage will ride on. I decided to paint the rod clips black. Originally they were bare metal and rusty. I figured I’d have to keep them oiled to prevent rust but then every spec of sawdust is going to stick to them so we’ll see how paint works.

Here’s a side shot.

And a close up. The cast iron ways came out pretty good considering how rusty they were. Another shout out for Evapo-Rust! I removed the aluminum rule which notes the angle (45, 60, 90 etc.) it was pretty beat up and I wanted to remove the rust from underneath it. Not sure if I’m going to put it back on, all the angles have a stops machined for them so its not really needed. I’m mostly going to cross cut 90 degrees anyway.

That’s all for now.



4 comments so far

View libraryman's profile

libraryman

37 posts in 2244 days


#1 posted 87 days ago

I have the tiny 7” Multiplex That was my Grandfathers. It is in fair condition and still operates ok – however it takes about 3 minutes for the blade to come to a stop after switching off. Have you found anyway to make the motor come to a stop quicker?

View darthford's profile

darthford

518 posts in 424 days


#2 posted 87 days ago

libararyman start by replacing the motor bearings they are not supposed to spin free like that, that’s an indication they need to be replaced. They should be packed with grease and resistant to spinning.

View libraryman's profile

libraryman

37 posts in 2244 days


#3 posted 86 days ago

Great suggestion. I didn’t think of this possibly being the cause. I’m going to be completely tuning up my saw this Spring – fortunately I don’t have rust on any parts, so it will be mostly things like bearings, etc. My Grandfather was a finish carpenter and never needed a table saw – he ripped and crosscut on the Multiplex. I don’t think I will ever rip boards with it but hopefully will cut all trim moldings and picture frames with it. Will pester you for more info when I begin – especially if I need motor work done.

View darthford's profile

darthford

518 posts in 424 days


#4 posted 86 days ago

fortunately I don’t have rust on any parts” lol famous last words I said the same thing until I started disassembling the saw, hopefully you won’t. What I found was the factory painted the saw ‘after’ they assembled it. The internal bare metal surfaces of which there were many had rusted. Most could have been painted had they taken the time to do so, I did on this rebuild. Post some pics of your saw here if you like or PM me I’d like to see it.

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