Yeah, forgot to mention that one. That was my first plan. Tried it. It didn't work for me either. The new 2.75 inch hole saw I bought was a bit taller than my 2.25 inch hole saw so the smaller saw didn't stick out above the larger saw. Grrrr.
Dennis C. On Fri, Jan 19, 2018 at 8:02 AM, Frederick G Street via CnC-List < cnc-list@cnc-list.com> wrote: > Dennis — don’t forget the method of stacking hole saws of different sizes > on one mandrel. If you have an existing 1-1/2” hole and need it to be > 1-7/8”, you can often slide the smaller hole saw into the larger one and > put them on the same mandrel; the smaller saw (original hole size) will > often stand proud of the larger hole saw enough to act as a guide to start > the new cut. > > — Fred > > Fred Street -- Minneapolis > S/V Oceanis (1979 C&C Landfall 38) -- on the hard in Bayfield, WI :^( > > On Jan 19, 2018, at 7:52 AM, Dennis C. via CnC-List <cnc-list@cnc-list.com> > wrote: > > Sometimes we're faced with enlarging an existing hole. There are a couple > of recognized ways to provide an "anchor" to center the pilot bit on a hole > saw. The most common way is to secure a piece of scrap wood over the hole > (behind or in front) and then drill the new hole. A second way is to cut a > plug, place it in the hole and secure it with spray foam, etc. > > Well, I had to enlarge a hole on Touche' and I thought neither of the > above methods would work. I dreamed up another method which I've never > seen in my web research. Here's a link to my write up. Perhaps someone > will find it useful someday. > > https://drive.google.com/open?id=1I84iwQstTrzPcvQf2lNEWi8xeGDPcHaH > > Dennis C. > Touche' 35-1 #83 > Mandeville, LA > > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > >
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