Circular saw arbor problem

[BigBlue1]

So, I bought a nice 10 1/4" Milwaukee circular saw for a project I have coming up that requires cutting and ripping 3" thick maple. It had a dull blade so I bought a replacement. Turns out that the arbor on this saw is 3/4" but there are no 3/4" arbor 10" or 10 1/4" saw blades to be had these days. Apparently that was a standard that was phased out. All blades are 5/8" arbors or diamond.

The spindle on the saw is 5/8" and a 5/8" arbor blade fits over it but the saw's spindle washer (the inside one) has a small lap flange that the 3/4" blade fits over. So the flange is in the way and the blade cannot be run like this. The 5/8" blade is a no-go.

Do I keep searching for a 10" or 10 1/4" blade with a 3/4 arbor? Are they out there?

Do I grind off the flange on the spindle washer and just use the blade I have sandwiched between the washers? The blade's 5/8" arbor opening fits well over the saw's spindle. Not much play. All the lap flange seems to do is center the 3/4" blade, so if the 5/8" fits concentric it's basically the same thing this way. Since the 3/4" blades seem to be a thing of the past it's not like I'm limiting myself in the future.

Do I find a machine shop to drill out the saw blade to 3/4"? I'll have to buy another blade though - one that doesn't have the diamond knock-out - in order to do that.

Thanks for any suggestions.

Rob

 

[Rustyiron]

Is this inner flange removable? I have grinders that are a similar situation. Also I've seen blades that have a "knockout" for a larger arbor or the older diamond shape on the inside saw flange/washer, but the last one I saw (a couple of weeks ago) was a diamond masonry blade.
Try tapping on this inner washer, or better yet gooble your saw's model #.

 

[Peter 315]

I found this one...Saw Blade, 1" X 8 Tooth X 3/4 Arbor Trim Saw Blade 6 Deg Negative Hook #1245 – KVAL Online Store

 

[Peter 315]

Freud D1W Diablo 1-1/4-Inch 4 Tooth ATB General Purpose Saw Blade with 5/8-Inch and Diamond Knockout Arbor, Multi - Big Foot Saw Blades - Amazon.com

 

[s219]

You might look for blades with 1" arbor and then use a 3/4" to 1" bushing. I had to do something similar to adapt a dado blade on a table saw once.

 

[BigBlue1]

Is this inner flange removable? I have grinders that are a similar situation. Also I've seen blades that have a "knockout" for a larger arbor or the older diamond shape on the inside saw flange/washer, but the last one I saw (a couple of weeks ago) was a diamond masonry blade.
Try tapping on this inner washer, or better yet gooble your saw's model #.

Yes, the inner spindle washer is removeable. I could easily take it off and grind the lap flange off of it.

Rob

 

[BigBlue1]

I found this one...Saw Blade, 1?" X 8? Tooth X 3/4 Arbor Trim Saw Blade 6 Deg Negative Hook #1245 KVAL Online Store

Yeah, but $90 for a blade is nuts (probably plus shipping). Plus, that's an 80 tooth blade and I need this for ripping 3" material so that's not a good fit. I had found that one earlier and passed on it.

Rob

 

[BigBlue1]

Freud D1?4?W Diablo 1?-1/4-Inch 4? Tooth ATB General Purpose Saw Blade with 5/8-Inch and Diamond Knockout Arbor, Multi - Big Foot Saw Blades - Amazon.com

This is the blade I bought. 5/8" arbor or knockout diamond.

 

[BigBlue1]

You might look for blades with 1" arbor and then use a 3/4" to 1" bushing. I had to do something similar to adapt a dado blade on a table saw once.

Yes, that's a possibility. Would that be any better than just removing the lap flange on the spindle washer though and using the 5/8" blade?

 

[Rustyiron]

Yes, the inner spindle washer is removeable. I could easily take it off and grind the lap flange off of it.

Rob

Sorry, I was thinking it but didn't say it....does the "washer" have a flat side or a 5/8 ?