Actually the disk cutter is a high speed air motor with a 3/8 chuck on the end just like a drill motor and the disks come in a variety of diameters depending on your specific requirements. The disk surface is perpendicular to the centerline of the air motor thus allowing you to cut with the edge of the disk. After playing with a couple of layout ideas I am thinking saws all. I like your idea of physically affixing a pivot point to the center of the area to be removed. I scrounged up a peace of 1/4 by 1 inch aluminum strap. My plan is to attach it to the shoe of my saws all to minimize blade wonder.A 1/4 inch cap-screw with a lock-nut left loose enough so that the blade won't bind while making the circle on the contour of the hood should do the trick. Unfortunately I really don't have any practice blanks so this is definitely be a measure twice and cut once situation. I will let you know how it works.
BTW with respect to gloves, Try the 20 Mil Nytral latex mechanics gloves. they are cheep, bullet proof, disposable and they still give you a great feel of your work. I have used them for years and they are a real hand saver. You can find them in most auto parts store priced at about $10.00 per hundred gloves. Depending on what I am doing a box can last me several months. At 11:26 AM 8/27/2006 -0400, Dale Leavens wrote: >Well I don't have any experience with the disk cutter, I assume it is >mounted like a circular saw in which case cutting a curve will be very >difficult. > >With a sawsall though, a bar or stick of wood with a pin or probably even >better a small bolt through it near one end and cut 9 inches from the middle >of the bolt to the end minus the distance from the end of the shoe of the >sawsall to the blade then drill and saw or file enough length to get the >blade of the sawsall through. Then drop the bolt on the end of the stick >through a hole at the center of the circle and I think I would slip a lock >nut on it to be sure that vibration or other things won't allow it to come >free. Then keep the edge of the shoe of the sawsall against the end of the >stick or bar and if anything just keep the saw very very gently turned >toward the center of the circle just enough to keep it from tending to >wander away from the end of the stick and then make your way around the >circle using the rod or stick to keep you equally spaced away from the >centre. > >If you can manage with light cotton gloves I recommend it. The blade you >will be using will have very fine teeth so that isn't much trouble but it >can get pretty darn hot and it is also a little difficult to keep the shoe >against the end of the stick while keeping your fingers from getting pounded >by the shaft and blade holder and often small shards or curls of wire >cuttings. > >Well that is my suggestion. I haven't cut a lot of metal though and the hood >won't be flat I am sure, they are usually contoured so it may be a little >difficult to track perfectly. > >Hope this helps. > >Dale Leavens, Cochrane Ontario Canada >[EMAIL PROTECTED] >Skype DaleLeavens >Come and meet Aurora, Nakita and Nanook at our polar bear habitat. > > >----- Original Message ----- >From: "Larry Stansifer" <[EMAIL PROTECTED]> >To: <blindhandyman@yahoogroups.com>; <blindhandyman@yahoogroups.com> >Sent: Sunday, August 27, 2006 10:41 AM >Subject: Re: [BlindHandyMan] cutting a circle > > > > 14Gage body sheet metal. > > Saws-all or high speed composite cutting disk. > > > > At 10:27 AM 8/27/2006 -0400, Dale Leavens wrote: > > > >>What tool do you intend to use to cut with? Is this sheet metal or some > >>composite? > >> > >> > >> > >>Dale Leavens, Cochrane Ontario Canada > >>[EMAIL PROTECTED] > >>Skype DaleLeavens > >>Come and meet Aurora, Nakita and Nanook at our polar bear habitat. > >> > >> > >>----- Original Message ----- > >>From: "Larry Stansifer" <[EMAIL PROTECTED]> > >>To: <blindhandyman@yahoogroups.com> > >>Sent: Sunday, August 27, 2006 10:11 AM > >>Subject: [BlindHandyMan] cutting a circle > >> > >> > >> > Hi Guys, > >> > > >> > I need to cut an 18-inch circle in the middle of the hood of my hotrod > >> > in > >> > order to accommodate a cold air induction setup. I have identified and > >> > marked the center of the circle. Now the trick is to lay out the > >> > perimeter > >> > and make the cut without it having to many square corners. > >> > I have a couple of ideas however if you guys have done something like > >> > this > >> > before I don't want to reinvent the wheel. > >> > > >> > > >> > Regards > >> > > >> > Larry Stansifer > >> > > >> > Toll Free 1 (800)-527-9572 > >> > Voice: 1 (435)-688-1391 > >> > Fax: 1 (435) 628-6981 > >> > Email: [EMAIL PROTECTED] > >> > > >> > > >> > -- > >> > No virus found in this outgoing message. > >> > Checked by AVG Free Edition. > >> > Version: 7.1.405 / Virus Database: 268.11.6/428 - Release Date: > >> > 8/25/2006 > >> > > >> > > >> > > >> > > >> > To listen to the show archives go to link > >> > http://acbradio.org/handyman.html > >> > or > >> > ftp://ftp.acbradio.org/acbradio-archives/handyman/ > >> > > >> > The Pod Cast address for the Blind Handy Man Show is. > >> > http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > >> > > >> > The Pod Cast address for the Cooking In The Dark Show is. > >> > http://www.gcast.com/u/cookingindark/main.xml > >> > > >> > Visit The New Blind Handy Man Files Page To Review Contributions From > >> > Various List Members At The Following Address: > >> > http://www.jaws-users.com/handyman/ > >> > Visit the new archives page at the following address > >> > http://www.mail-archive.com/blindhandyman@yahoogroups.com/ > >> > For a complete list of email commands pertaining to the Blind Handy Man > >> > list just send a blank message to: > >> > [EMAIL PROTECTED] > >> > Yahoo! Groups Links > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > > >> > -- > >> > No virus found in this incoming message. > >> > Checked by AVG Free Edition. > >> > Version: 7.1.405 / Virus Database: 268.11.6/428 - Release Date: > >> > 25/08/2006 > >> > > >> > > >> > >> > >> > >>To listen to the show archives go to link > >> http://acbradio.org/handyman.html > >>or > >>ftp://ftp.acbradio.org/acbradio-archives/handyman/ > >> > >>The Pod Cast address for the Blind Handy Man Show is. > >>http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > >> > >>The Pod Cast address for the Cooking In The Dark Show is. > >>http://www.gcast.com/u/cookingindark/main.xml > >> > >>Visit The New Blind Handy Man Files Page To Review Contributions From > >>Various List Members At The Following Address: > >>http://www.jaws-users.com/handyman/ > >>Visit the new archives page at the following address > >>http://www.mail-archive.com/blindhandyman@yahoogroups.com/ > >>For a complete list of email commands pertaining to the Blind Handy Man > >>list just send a blank message to: > >>[EMAIL PROTECTED] > >>Yahoo! Groups Links > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> > >>-- > >>No virus found in this incoming message. > >>Checked by AVG Free Edition. > >>Version: 7.1.405 / Virus Database: 268.11.6/428 - Release Date: 8/25/2006 > > > > > > Regards > > > > Larry Stansifer > > > > Toll Free 1 (800)-527-9572 > > Voice: 1 (435)-688-1391 > > Fax: 1 (435) 628-6981 > > Email: [EMAIL PROTECTED] > > > > > > -- > > No virus found in this outgoing message. > > Checked by AVG Free Edition. > > Version: 7.1.405 / Virus Database: 268.11.6/428 - Release Date: 8/25/2006 > > > > > > > > > > To listen to the show archives go to link > > http://acbradio.org/handyman.html > > or > > ftp://ftp.acbradio.org/acbradio-archives/handyman/ > > > > The Pod Cast address for the Blind Handy Man Show is. > > http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > > > > The Pod Cast address for the Cooking In The Dark Show is. > > http://www.gcast.com/u/cookingindark/main.xml > > > > Visit The New Blind Handy Man Files Page To Review Contributions From > > Various List Members At The Following Address: > > http://www.jaws-users.com/handyman/ > > Visit the new archives page at the following address > > http://www.mail-archive.com/blindhandyman@yahoogroups.com/ > > For a complete list of email commands pertaining to the Blind Handy Man > > list just send a blank message to: > > [EMAIL PROTECTED] > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > -- > > No virus found in this incoming message. > > Checked by AVG Free Edition. > > Version: 7.1.405 / Virus Database: 268.11.6/428 - Release Date: 25/08/2006 > > > > > > > >To listen to the show archives go to link > http://acbradio.org/handyman.html >or >ftp://ftp.acbradio.org/acbradio-archives/handyman/ > >The Pod Cast address for the Blind Handy Man Show is. >http://www.acbradio.org/news/xml/podcast.php?pgm=saturday > >The Pod Cast address for the Cooking In The Dark Show is. >http://www.gcast.com/u/cookingindark/main.xml > >Visit The New Blind Handy Man Files Page To Review Contributions From >Various List Members At The Following Address: >http://www.jaws-users.com/handyman/ >Visit the new archives page at the following address >http://www.mail-archive.com/blindhandyman@yahoogroups.com/ >For a complete list of email commands pertaining to the Blind Handy Man >list just send a blank message to: >[EMAIL PROTECTED] >Yahoo! Groups Links > > > > > > > > > > >-- >No virus found in this incoming message. >Checked by AVG Free Edition. >Version: 7.1.405 / Virus Database: 268.11.6/428 - Release Date: 8/25/2006 Regards Larry Stansifer Toll Free 1 (800)-527-9572 Voice: 1 (435)-688-1391 Fax: 1 (435) 628-6981 Email: [EMAIL PROTECTED] -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.11.6/428 - Release Date: 8/25/2006 To listen to the show archives go to link http://acbradio.org/handyman.html or ftp://ftp.acbradio.org/acbradio-archives/handyman/ The Pod Cast address for the Blind Handy Man Show is. http://www.acbradio.org/news/xml/podcast.php?pgm=saturday The Pod Cast address for the Cooking In The Dark Show is. http://www.gcast.com/u/cookingindark/main.xml Visit The New Blind Handy Man Files Page To Review Contributions From Various List Members At The Following Address: http://www.jaws-users.com/handyman/ Visit the new archives page at the following address http://www.mail-archive.com/blindhandyman@yahoogroups.com/ For a complete list of email commands pertaining to the Blind Handy Man list just send a blank message to: [EMAIL PROTECTED] Yahoo! 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