a forstner bit is a large hunk of steel. it is almost a complete circle with cutting teeth around the bottom outside edge. then crossing from the outside to the center point there are 2 straight cutting edges that take out the wood in the middle. they make a very clean hole. jim At 10:26 AM 5/26/2008, you wrote:
>what is this item? >Please describe. > >On Sun, 25 May 2008, cheetah wrote: > > > yep a forstner bit will do the job nicely. > > alls he needs is about an inch and a half. > > i have a 3 inch forstner bit so they get quite large. > > jim > > At 07:52 PM 5/25/2008, you wrote: > > > >> Another option might be forstner bits. I don't know how big those bits go. > >> > >> earlier, Paul Franklin, wrote: > >> > >>> Somewhere in the distant past, probably at Sears, I bought a nest of > >>> deep whole saws for about $12.00. They would Easley cut a whole > >>> through 2 inch stock. They were definitely not of top quality and > >>> because of their extra depth they got out of round easily. They got > >>> a lot of use and didn't last all that long. They were a handy tool > >>> to have in my shop and I have looked for another set with out > >>> success, for the last couple of years. > >>> > >>> Paul Franklin > >>> > >>> ----- Original Message ----- > >>> From: Dale Leavens > >>> To: > >> > <mailto:blindhandyman%40yahoogroups.com><mailto:blindhandyman%40yahoogroups.com><mailto:blindhandyman%40yahoogroups.com>blindhandyman@yahoogroups.com > >>> Sent: Sunday, May 25, 2008 11:00 AM > >>> Subject: Re: [BlindHandyMan] cutting a circular hole > >>> > >>> A fly cutter is a drill bit set into a thicker mandrill which is to > >>> be mounted into the chuck of a drill press. There is a bar which > >>> runs through a square hole in that mandrill laterally which can be > >>> slid further out from the shaft and tightened into place with a set > >>> screw. This lateral bar has another rectangular bar extending down > >>> with a beveled sort of sharpened chisel tip which revolves around > >>> the bit center as they both turn and which describes a circle the > >>> radius of the amount of the lateral beam protruding from the > >>> mandrill.This sharp chisel then is spinning at the radius from the > >>> center which has been selected by the user and of course the entire > >>> thing is necessarily unbalanced. > >>> > >>> In a drill press it does at least maintain it's position relative to > >>> the work being cut, on the end of a hand held drill though, just the > >>> off-center vibration makes it near impossible to keep steady. Once > >>> it begins biting into wood, and remembering at two points in the > >>> rotation it is cutting cross grain while at two other points it is > >>> cutting with the grain, the rotation torque is constantly variable. > >>> As hard and strong as the steel is, the possibility of any number of > >>> things failing is very high. > >>> > >>> Because of the design too, the depth of the fly cutter is only about > >>> an inch. They do come in different sizes, the one I have probably > >>> cuts up to about 4 and a half maybe 5 inches. > >>> > >>> My experience is that regardless of how much care I use one or other > >>> of the set screws fails during the process and usually it is the > >>> radius which begins expanding. I had such a problem when cutting to > >>> form a nice arch shaped cutout on the fence I made for my router > >>> table. My idea was to cut the hole just centered a little below the > >>> radius of the hole then with the table saw cut away the edges to > >>> form what would look like a very steady handed ban saw operator had > >>> formed a fine archway for the dust collection. > >>> > >>> From one side it turned out like that, the other side ended up > >>> having a quarter inch deep curved line about 3/8ths outside the > >>> circumference of the arc. I hid this from view by making that the > >>> back side of the fence and covering it with the construction into > >>> which the dust collection hose gets fitted.I then ordered two sets > >>> of what should be good quality hole saws. > >>> > >>> ----- Original Message ----- > >>> From: John Schwery > >>> To: > >> > <mailto:blindhandyman%40yahoogroups.com><mailto:blindhandyman%40yahoogroups.com><mailto:blindhandyman%40yahoogroups.com>blindhandyman@yahoogroups.com > >>> Sent: Sunday, May 25, 2008 9:10 AM > >>> Subject: Re: [BlindHandyMan] cutting a circular hole > >>> > >>> What is a fly cutter and what sizes of holes do they cut? > >>> > >>> earlier, Dale Leavens, wrote: > >>> > >>>> Fly cutters in anything other than a drill press which keeps it > >>>> running true are prone to breaking apart or having bits fly off if > >>>> they aren't kept running absolutely true. You are warned never to > >>>> use them outside of a drill press. > >>>> > >>>> A broken wrist is only one of a number of serious injuries one > >> can sustain. > >>>> > >>>> ----- Original Message ----- > >>>> From: > >> > <mailto:spiro%40netaxs.com><mailto:spiro%40netaxs.com><mailto:spiro%40netaxs.com><mailto:spiro%40netaxs.com>[EMAIL > PROTECTED] > >>>> To: > >>> > >> > <mailto:blindhandyman%40yahoogroups.com><mailto:blindhandyman%40yahoogroups.com><mailto:blindhandyman%40yahoogroups.com><mailto:blindhandyman%40yahoogroups.com>blindhandyman@yahoogroups.com > >>>> Sent: Sunday, May 25, 2008 12:49 AM > >>>> Subject: Re: [BlindHandyMan] cutting a circular hole > >>>> > >>>> spade bits and fly cutters, (hole cutter for drill press here) are > >>>> similarly difficult to 360 center and can wrench a wrist if they hit a > >>>> knot in the wood. > >>>> > >>>> On Fri, 23 May 2008, Dale Leavens wrote: > >>>> > >>>>> You should never use a hole cutter in anything other than a drill > >>>> press for reasons of safety however you can safely use a hole saw. > >>>> These come in a number of sizes, I think my largest is 4 and a half > >>>> inches. These can be used in a hand power drill. There is a central > >>>> twist bit which is longer than the peripheral ring with saw teeth. > >>>> The twist bit guides the rotating saw into and on through the wood. > >>>>> > >>>>> I suggest that once the bit comes out the far side and before the > >>>> rotating saw part cuts through that you remove the hole saw and > >>>> complete the cut from the other side to keep it from tearing the > >>>> wood as it exits. > >>>>> > >>>>> You can buy individual hole saws or a set. If not readily > >>>> available where you live I bought my sets from Leevalley.com. > >>>>> > >>>>> I doubt you will find a spade bit big enough but you could get a > >>>> large auger bit for a hand brace & bit. > >>>>> > >>>>> Hope this helps. > >>>>> > >>>>> ----- Original Message ----- > >>>>> From: Robert Riddle > >>>>> To: > >>> > >> > <mailto:blindhandyman%40yahoogroups.com><mailto:blindhandyman%40yahoogroups.com><mailto:blindhandyman%40yahoogroups.com><mailto:blindhandyman%40yahoogroups.com>blindhandyman@yahoogroups.com > >>>>> Sent: Friday, May 23, 2008 2:19 PM > >>>>> Subject: [BlindHandyMan] cutting a circular hole > >>>>> > >>>>> > >>>>> I need to cut a circular hole in one of the boards comprising my > >>>> picnic table for the umbrella. Everything I've read says to use a > >>>> circle cutter in a drill press, which I don't have. Are there any > >>>> other options? > >>>>> > >>>>> [Non-text portions of this message have been removed] > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> > >>>>> ---------------------------------------------------------- > >>>>> > >>>>> > >>>>> No virus found in this incoming message. > >>>>> Checked by AVG. > >>>>> Version: 7.5.524 / Virus Database: 269.24.0/1462 - Release Date: > >>>> 5/23/2008 7:20 AM > >>>>> > >>>>> > >>>>> [Non-text portions of this message have been removed] > >>>>> > >>>>> > >>>> > >>>> ---------------------------------------------------------- > >>>> > >>>> No virus found in this incoming message. > >>>> Checked by AVG. > >>>> Version: 7.5.524 / Virus Database: 269.24.1/1464 - Release Date: > >>>> 5/24/2008 8:56 AM > >>>> > >>>> [Non-text portions of this message have been removed] > >>>> > >>>> > >>>> No virus found in this incoming message. > >>>> Checked by AVG. > >>>> Version: 8.0.100 / Virus Database: 269.24.1/1464 - Release Date: > >>>> 5/24/2008 8:56 AM > >>> > >>> John > >>> > >>> [Non-text portions of this message have been removed] > >>> > >>> ---------------------------------------------------------- > >>> > >>> No virus found in this incoming message. > >>> Checked by AVG. > >>> Version: 7.5.524 / Virus Database: 269.24.1/1464 - Release Date: > >>> 5/24/2008 8:56 AM > >>> > >>> [Non-text portions of this message have been removed] > >>> > >>> [Non-text portions of this message have been removed] > >>> > >>> > >>> No virus found in this incoming message. > >>> Checked by AVG. > >>> Version: 8.0.100 / Virus Database: 269.24.1/1464 - Release Date: > >>> 5/24/2008 8:56 AM > >> > >> John > >> > >> [Non-text portions of this message have been removed] > >> > >> > >> No virus found in this incoming message. > >> Checked by AVG. > >> Version: 8.0.100 / Virus Database: 269.24.1/1465 - Release Date: > >> 5/25/2008 1:22 PM > > > > > >No virus found in this incoming message. >Checked by AVG. >Version: 8.0.100 / Virus Database: 269.24.1/1466 - Release Date: >5/25/2008 6:49 PM
