A Pretty Big Dog RAS

[jteneyck]

I ran the motor with no blade.  It ran smoothly but I could hear something on the fan end.  I pulled the rear bell off and ran it again and the sound was gone.  The inside of the bell showed a tiny kiss mark, so the fan is not quite straight enough.  But rather than try to straighten it further, I put a piece of heavy string between the bell and bearing housing, where the two mate, to act as a gasket.  That provided enough clearance for the fan, and it runs quietly now.  

I put a 12" blade on the arbor and turned it on.  When I turned it off, it spun for 22 seconds before coming to a dead stop.  It ran for several minutes before changing the bearings.  I'm pleased.  

Up next - dust collection. 

John

[FrankAtl]

Thanks for the detailed writeup John!

[jteneyck]

It's ready to go.  I built a simple dust collection box for it that's nearly the same as what I made for my 925.  It sits at the rear fence position but still captures the dust very well with the fence at the forward position, where I plan to leave it unless I need to cut something wider than about 21".  





Here's a link to a video of the dust collection that I took cutting some MDF.  There was an extra 4" hose wide open when I took the video.  After I blocked that off, it gets essentially 100% of the visible dust.  

Dust Collection Video

It took a while to get the saw dialed in to be 90/90 degrees and the blade parallel with the saw arm, so the cuts are smooth on both sides of the cut line, but it's done.  I'm ready to start using it.  

John

[Bob Vaughan]

Great job.

Here;s a hack you might want to consider after you tire of leaning over and trying to turn the raise/lower crank.

https://www.owwm.org/viewtopic.php?f=1&t=224672

[MarkSingleton]

That is amazing dust collection. Is it collecting below the table/workpiece as well?

[jteneyck]

Great job.

Here;s a hack you might want to consider after you tire of leaning over and trying to turn the raise/lower crank.

https://www.owwm.org/viewtopic.php?f=1&t=224672

Hi Bob, 

Thanks, but the link doesn't work for me.  I'm interested to see what it shows, though.  

John

[jteneyck]

That is amazing dust collection.  Is it collecting below the table/workpiece as well?

No, just through the box that lays on the back table.  There is a 4" hose on the back end, so that's maybe 300 cfm flow.   The sawdust naturally wants to flow straight backwards.  The dust collection box just has to capture what's coming towards it.  

John

[Bob Vaughan]

Hi Bob, 

Thanks, but the link doesn't work for me.  I'm interested to see what it shows, though.  

John

maybe this
https://www.owwm.org/viewtopic.php?f=1&t=224672&p=1612869&hilit=RAS+hack#p1612869

or put RAS hack in the search box.

[jteneyck]

maybe this
https://www.owwm.org/viewtopic.php?f=1&t=224672&p=1612869&hilit=RAS+hack#p1612869

or put RAS hack in the search box.

Yeah, I had to use "RAS hack" to find it, but I got there.  That's pretty darned clever.  Not pretty, but it certainly solves having to lean so far over the table.  Thanks very much.  

John