LumberJocks

Found: Hole Saw for Shop Vac Hose Connection

  • Advertise with us

« back to Power Tools, Hardware and Accessories forum

Forum topic by david2011 posted 12-02-2020 05:54 AM 546 views 0 times favorited 8 replies Add to Favorites Watch
View david2011's profile

david2011

120 posts in 4676 days


12-02-2020 05:54 AM

For some reason 2-1/4” hole saws seem to be hard to find. I found one in Home Depot earlier today, a Milwaukee Hole Dozer. It was about $17 with a 3/8” arbor. My first test cut was with it in a drill press. I grabbed a scrap of 1/2” birch ply that has a very thin veneer which splinters easily. On contact with the wood the sound was a very pleasant hiss instead of the expected grinding sound. There was no tearout or splintering of the thin veneer. The teeth cut more like those of a table saw blade than a typical hole saw. Best of all, the hole was a perfect fit for the end of a 2-1/2” Shop Vac brand hose. It’s perfect for those one-off dust collection shrouds that are better suited for a vacuum cleaner rather than a dust collector.

BTW, neither Home Depot nor Amazon lists the 2-1/4” size on their websites.

-- David


8 replies so far

View Kelly's profile

Kelly

3280 posts in 3913 days


#1 posted 12-12-2020 08:25 PM

Good score for the woodworkers.

It’s kind of amazing how all over the board vacuum fittings are. To that end, I have a tub full of fittings and PVC pipe pieces for spacers, elbows and so on on.

View ohtimberwolf's profile

ohtimberwolf

1051 posts in 3321 days


#2 posted 12-12-2020 08:39 PM

Look here. https://duckduckgo.com/?q=2+1%2F4+hole+saw+bit&atb=v168-1__&iax=images&ia=images
larry

-- Just a barn cat, now gone to cat heaven.

View JIMMIEM's profile

JIMMIEM

112 posts in 1811 days


#3 posted 12-13-2020 02:12 AM

Harbor Freight has them in kits. I got a kit for about $10. Used it for the same purpose.

View david2011's profile

david2011

120 posts in 4676 days


#4 posted 12-13-2020 03:57 AM



Look here. https://duckduckgo.com/?q=2+1%2F4+hole+saw+bit&atb=v168-1__&iax=images&ia=images
larry

- ohtimberwolf

Cool. It’s funny; several of those are for Home Depot products but they don’t show up, for me anyhow, on the HD website. Their search feature leaves much to be desired.

-- David

View Lazyman's profile

Lazyman

6312 posts in 2356 days


#5 posted 12-13-2020 04:45 AM

In a pinch, you can enlarge a hole using a router with rabbet bit and flush trim or pattern bit.
For example to make a 2 1/4” hole in wood with a 2” Forstner bit or hole saw:
  1. Drill a 2” hole.
  2. Use the 1/8” rabbet bit to enlarge the hole on one end. (Edit: I changed it from 1/4 to 1/8 because it needs to be half the amount you have to add to the diameter)
  3. Use the pattern bit to enlarge the rest of the hole with the bearing riding where you just cut with the rabbet bit.
  4. You can do this multiple times until you get to the size you want.

If the wood is too thin, you may need to temporarily attach a sacrificial block of wood to the spot to give you enough room for the guide bearing to ride when using the rabbet bit and you may not need the flush trim.

-- Nathan, TX -- Hire the lazy man. He may not do as much work but that's because he will find a better way.

View david2011's profile

david2011

120 posts in 4676 days


#6 posted 12-13-2020 06:29 AM

There are lots of things I “could” do if 2/3 of my small tools weren’t still in storage. We bought the house we’re in now and then started packing up the old house 700 miles away after buying the new one. I started shutting my old shop down in April of 2019 and the new shop wasn’t completed until 2-3 weeks ago. I’m doing what I can with what I have to build shop furniture, cabinets and work benches. I try to resist buying duplicate tools like Forstner bits that are in storage.

The hole saw allowed me to enlarge a tiny 1” dust port in a router table to accept the Shop Vac hose. It had an adapter to get it up to 1-1/4”. Even with router bushings and flush trim bits I couldn’t have fixed the router table. It was all glued together by the guy that built it and a hole saw or Forstner bit were the only ways to fix it. I just cut a piece of birch ply to the right size, made the hole with the hole saw and glued it over the small hole. When the glue was dry I used a hand drill to cut away the restriction in the original dust port.

The Milwaukee hole saw is the first GOOD hole saw I’ve owned. I thought my last set was good until I used this one for the first time. I think the last kit I bought was by Lenox but it was big box store quality. It was better than what I had purchased before that but pales in comparison to the Milwaukee.

My background is a lifetime of building flying model airplanes; control line when I was younger and I started with radio controlled planes after I finished college. I can run a metal lathe, milling machine and other metal working machinery with ease. I can build a very accurate bolt action rifle and have designed and built gunsmithing tooling that can’t be bought. Working with wood to produce anything better than rough shop storage is very new to me so it’s easy to get excited about finding better woodworking tools. Glad I saved my pennies before I retired! I hope to unload the storage unit into my garage and shop in a month or so. Having all of my tools available again will be comforting.

-- David

View hotbyte's profile

hotbyte

1017 posts in 3945 days


#7 posted 12-13-2020 01:57 PM

I did as Lazyman described to make a template. Now, I just drill 2” hole and use flush trim bit with template as needed.

View ohtimberwolf's profile

ohtimberwolf

1051 posts in 3321 days


#8 posted 12-13-2020 02:36 PM

David2011: It sounds like you have had a plan for a long time and now are inches away from fulfilling that vision.
Best to you and enjoy your new shop. Don’t forget to continue to share with all of us, who have welcomed you here, some of that knowledge you have acquired over the years when we need it. Have fun and stay safe. larry

-- Just a barn cat, now gone to cat heaven.

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com