Circular saw arbor problem

[Rustyiron]

I have a Skilsaw worm drive "big foot" and got a blade from Amazon, it wasn't $90 but it wasn't cheap. $60 iirc and it is a Freud for sure.

 

[RBLapham]

Had a similar problem with a dado set and needed to increase the holes in the blades. Bought a tapered reamer and put in my cordless drill and did the hole enlarging in a few seconds. Really even and smooth holes. Cost about $15. Just get one the size you need (3/4)

 

[BigBlue1]

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

The spindle washer on the inside is cone shaped on the outside and has a lap flange on the inside where the 3/4" arbor blade rides over. The outer washer is flat.

The inner one is sort of like this except the spindle is a splined round shaft, not a square one.

 

[downsizingnow48]

You could get your dull blade sharpened.

 

[BigBlue1]

You could get your dull blade sharpened.

This is true. But I'm really looking for the question answered:

Is it a poor idea to grind off the lap flange on the inner spindle washer even if the 5/8 arbor blade fits snugly on the spindle? If so, why?

If the answer to that is that it's a bad idea I'll pursue the other paths.

Thanks,
Rob

 

[downsizingnow48]

When I first started in the trades, I was on a job with an elderly plumber who had an old Mall circular saw with a square arbor. Those blades had not been available for a long time. He had two blades and resharpened them over and over again. Worked for him. Vintage saw blades are fairly common on ebay, you might get lucky there.

My take is that I would not ad-hoc a solution on a toothy piece of steel that spins at 3000-5000 rpm.

There are lots of modern 10 1/4" saws ranging from cheap to real expensive. I have the Skil 10 1/4" wormdrive which makes easy work of 4" material.

 

[Rebeldad1]

Have you called a Milwaukee repair shop? They may have a fix or a great idea.

 

[Rustyiron]

But I'm really looking for the question answered:

Is it a poor idea to grind off the lap flange on the inner spindle washer even if the 5/8 arbor blade fits snugly on the spindle? If so, why?

Why don't you show us a picture of the s/n plate, maybe the group will find an answer. I'd wait until this modification is the last resort.

 

[BigBlue1]

The saw is a Milwuakee 6460 saw. It's not like it is from the 60's or something. I don't know what additional information from the model/serial plate would be useful.

 

[BigBlue1]

When I first started in the trades, I was on a job with an elderly plumber who had an old Mall circular saw with a square arbor. Those blades had not been available for a long time. He had two blades and resharpened them over and over again. Worked for him. Vintage saw blades are fairly common on ebay, you might get lucky there.

My take is that I would not ad-hoc a solution on a toothy piece of steel that spins at 3000-5000 rpm.

There are lots of modern 10 1/4" saws ranging from cheap to real expensive. I have the Skil 10 1/4" wormdrive which makes easy work of 4" material.

Resharpening is certainly a potential solution. I was hoping for something more flexible and sustainable over time.

It's not like this is some ancient saw. It's a Milwaukee 6460, which looks like it can't be more then 10-15 years old. Who knows though. I did look through a variety of other options for saws before buying this and I just don't need a $350+ new one. This was the only 10"+ used one I found. I just never anticipated blade availability issues on a brand name modern saw.