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**bobj3** · 03-21-2007, 11:15 AM

Hi Chad

This what I would do/recommend

For making speaker rings ....

When you get your Jasper rework the jig just a bit (see below) bolt it up to your router ,set the pin in place, pop in a plunge round over bit then make your 1st pass with the round over bit (see link below for the bit ) once you have that done pop in your 1/4" bit and cut your cir.out and your done.

You can filp the Jasper over and do both sides of the round over if you want then use your 1/4" bit and cut the cir. free.
Doing it this way you make it easy on the bits and can just make one pass to cut the cir.out.

Flat Bottom Round Over
http://www.mlcswoodworking.com/shops.../bt_groov.html

NOTE**** Most of the Cons. reviews on the Jasper Jig are about the holes breaking out of the jig, if you take a hard look at one of the snapshots below you can see why, they are drilled to deep in the jig or to say the jig is to thin but you can over come this error by using the brass guides in the jig.

Many Routers use a flat head screw to mount the base plate to the router and that's the same screw you need to use to mount the Jasper BUT if you torq it down ,the hole in the Jasper Jig will snap, and you just trashed a 30.oo jig, also if you use pan head screws the same will come about because you have no support under the screw so to speak (counter sink hole under the mounting screw) The Jasper Jig is a GREAT Jig but you must out think the Mfg.when it comes time to use it over and over.

They do make a small ring that you can use under the flat head screw that will let put the load down flat and put the load out just a bit,it looks like a flat washer (same size as a flat head screw) but with a counter sink in center of the flat washer,harden steel.
The Jasper comes with most of the screws to fit the routers they list on the pack BUT they are small Pan Head Type,if you use the screws that come with it besure to use a flat thin washer under the head (it must be the right one, for the over size drilled hole)

Sorry to push this point so hard but the hole in the jig will snap out, it's only 1/16" thick or less.
Hope this helps you and other user of the Jasper Jig.

Bj

chadmiha · 03-22-2007, 04:11 AM

Bob, thanks for the heads up on the flat bottom roundover bit, but I'm anxious to get these done so I'm going to stick to the roundover that I already have. I'm just a little concerned about the amount of control I'm going to need rounding over the circle without the Jasper. Should I be okay, or will the jig save my piece from noob destruction? Oh, by the way I got my Jasper today (aren't new tools/toys great?), pretty quick shipping to Hawaii, only 3 days. Well, thanks again hope to post pics in the next couple of days.

curiousgeorge · 03-22-2007, 07:02 PM

chadmiha you shouldn't have any problem with control with the bearing on the round-over bit as long as you just keep the router flat on the surface (vertical), the bearing against the edge and move the router in the correct direction (into the rotation of the bit). Why not practice on some scrap until you are comfortable with the process?

chadmiha · 03-23-2007, 02:03 AM

Yeah, I know that I'm probably just over thinking/worrying about this and I should be okay once I start and get a hands on feel. Plus, I'm only working with inexpensive MDF, it's not like its Koa or anything. Thanks to everyone who took the time out to help me with (just) speaker rings. I'll try to get it done on Sunday and take some pics. Thanks again.
Chad

curiousgeorge · 03-23-2007, 02:32 AM

You are very welcome, that's what we are here for. Good luck on your project and I will be looking forward to seeing some pictures of the results.

chadmiha · 03-29-2007, 04:26 AM

I told you I'd take pics even if it was bad...please help, what happened?

Outside:

Inside:

**Mike** · 03-29-2007, 07:20 AM

One of the rules of thumb is to make your cuts no more than 1/4" at a time. Once you have gotten the feel for your router and its operation you can alter this based on performance. The reason you ended up with the "tab" on the outside is your material was no longer secured to anything. You can place double sided carpet tape underneath your rings to help hold them in place. Depending on the application you may be able to screw through the ring to hold it in place, this is more secure. To help reduce tear out you can raise your round over bit slightly for the first cut and then you will just be making a fine finish cut on the second pass.

**challagan** · 03-29-2007, 07:31 PM

Welcome to the forums!

Corey

chadmiha · 03-30-2007, 04:51 AM

Well, here's what I did. The first cut I made was the outside. I clamped the MDF in between 2 horses and made the cut. There was nothing to support the piece from falling to the ground. Then to cut the inner part of the ring I taped the circle to the top of another piece of MDF, set the Jasper and made the inner cut. ( all cut were made with one pass) So, for the 1st cut (outter) should I have something supporting the piece from underneath? And if I'm making too deep of a cut, should I cut half way through the 3/4 MDF, flip the piece and cut the rest out from the other side? I was kinda in a rush (racing sunlight) and hopefully with a couple of tips will do better next time. Thanks again guys...
Chad

**bobj3** · 03-30-2007, 10:16 AM

Hi Chad

Give this a try

1st pick up some double sided carpet tape (2" wide) clamp your SUPPORT board to the saw horse then put the tape on the ring stock ( 2 strips min.) press it to the support board (tap it with a wooden hammer) to make sure it's down , drill your 1/8" hole for the center hole for the Jasper jig, then set your router to just at 3/4" deep, then fire up the router and make a pass or two to cut out the OUTside of the ring now reset the Jasper to make the INside pass once you have the cir.cut out take a hammer (or a small pry bar) and pop up the outside of the stock then chuck up your round over bit and go around the ring now pop out the center of the cir. and use the round over bit on the inside of the ring.
Made sure the ring is down good b/4 you use the round over bit,if it's not pop it up (with care) and retape the ring so it can't move around.

Good LUck

Bj

Quote:

Originally Posted by chadmiha

Well, here's what I did. The first cut I made was the outside. I clamped the MDF in between 2 horses and made the cut. There was nothing to support the piece from falling to the ground. Then to cut the inner part of the ring I taped the circle to the top of another piece of MDF, set the Jasper and made the inner cut. ( all cut were made with one pass) So, for the 1st cut (outter) should I have something supporting the piece from underneath? And if I'm making too deep of a cut, should I cut half way through the 3/4 MDF, flip the piece and cut the rest out from the other side? I was kinda in a rush (racing sunlight) and hopefully with a couple of tips will do better next time. Thanks again guys...
Chad

03-21-2007, 11:15 AM	#11
bobj3 Forum Contributer Supreme Forum King Join Date: Jan 2006 Location: Littleton,Colorado U.S.A. Posts: 8,300 View bobj3's Gallery	Report This Post! Hi Chad This what I would do/recommend For making speaker rings .... When you get your Jasper rework the jig just a bit (see below) bolt it up to your router ,set the pin in place, pop in a plunge round over bit then make your 1st pass with the round over bit (see link below for the bit ) once you have that done pop in your 1/4" bit and cut your cir.out and your done. You can filp the Jasper over and do both sides of the round over if you want then use your 1/4" bit and cut the cir. free. Doing it this way you make it easy on the bits and can just make one pass to cut the cir.out. Flat Bottom Round Over http://www.mlcswoodworking.com/shops.../bt_groov.html NOTE**** Most of the Cons. reviews on the Jasper Jig are about the holes breaking out of the jig, if you take a hard look at one of the snapshots below you can see why, they are drilled to deep in the jig or to say the jig is to thin but you can over come this error by using the brass guides in the jig. Many Routers use a flat head screw to mount the base plate to the router and that's the same screw you need to use to mount the Jasper BUT if you torq it down ,the hole in the Jasper Jig will snap, and you just trashed a 30.oo jig, also if you use pan head screws the same will come about because you have no support under the screw so to speak (counter sink hole under the mounting screw) The Jasper Jig is a GREAT Jig but you must out think the Mfg.when it comes time to use it over and over. They do make a small ring that you can use under the flat head screw that will let put the load down flat and put the load out just a bit,it looks like a flat washer (same size as a flat head screw) but with a counter sink in center of the flat washer,harden steel. The Jasper comes with most of the screws to fit the routers they list on the pack BUT they are small Pan Head Type,if you use the screws that come with it besure to use a flat thin washer under the head (it must be the right one, for the over size drilled hole) Sorry to push this point so hard but the hole in the jig will snap out, it's only 1/16" thick or less. Hope this helps you and other user of the Jasper Jig. Bj Attached Thumbnails __________________ PodCast videos RWS on YouTube http://www.routerforums.com/86898-post1.html Besure and click on the Up Arrow key ▲ on the Youtube video, you can select other youtube videos on router tables http://www.woodworkingonline.com/?s=dovetail Machine Cut ▼ http://www.woodworkingonline.com/200...cut-dovetails/ http://www.woodworkingonline.com/woo...podcast-store/ http://www.woodshopdemos.com/menu2.htm Bob J. Last edited by bobj3; 03-22-2007 at 10:36 AM.
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03-22-2007, 04:11 AM	#12
chadmiha Registered User Jr. Member Join Date: Mar 2007 Posts: 11 View chadmiha's Gallery	Report This Post! Bob, thanks for the heads up on the flat bottom roundover bit, but I'm anxious to get these done so I'm going to stick to the roundover that I already have. I'm just a little concerned about the amount of control I'm going to need rounding over the circle without the Jasper. Should I be okay, or will the jig save my piece from noob destruction? Oh, by the way I got my Jasper today (aren't new tools/toys great?), pretty quick shipping to Hawaii, only 3 days. Well, thanks again hope to post pics in the next couple of days.
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03-22-2007, 07:02 PM	#13
curiousgeorge Registered User Supreme Forum King Join Date: Nov 2006 Location: Fort Worth,Texas USA First Name: George Posts: 1,588 View curiousgeorge's Gallery	Report This Post! chadmiha you shouldn't have any problem with control with the bearing on the round-over bit as long as you just keep the router flat on the surface (vertical), the bearing against the edge and move the router in the correct direction (into the rotation of the bit). Why not practice on some scrap until you are comfortable with the process? __________________ George For those who haven't already done so... PLEASE! PLEASE! Fill in your first name and location in your profile.
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03-23-2007, 02:03 AM	#14
chadmiha Registered User Jr. Member Join Date: Mar 2007 Posts: 11 View chadmiha's Gallery	Report This Post! Yeah, I know that I'm probably just over thinking/worrying about this and I should be okay once I start and get a hands on feel. Plus, I'm only working with inexpensive MDF, it's not like its Koa or anything. Thanks to everyone who took the time out to help me with (just) speaker rings. I'll try to get it done on Sunday and take some pics. Thanks again. Chad
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03-23-2007, 02:32 AM	#15
curiousgeorge Registered User Supreme Forum King Join Date: Nov 2006 Location: Fort Worth,Texas USA First Name: George Posts: 1,588 View curiousgeorge's Gallery	Report This Post! You are very welcome, that's what we are here for. Good luck on your project and I will be looking forward to seeing some pictures of the results. __________________ George For those who haven't already done so... PLEASE! PLEASE! Fill in your first name and location in your profile.
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03-29-2007, 04:26 AM	#16
chadmiha Registered User Jr. Member Join Date: Mar 2007 Posts: 11 View chadmiha's Gallery	Report This Post! I told you I'd take pics even if it was bad...please help, what happened? Outside: Inside:
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03-29-2007, 07:20 AM	#17
Mike Senior Moderator Supreme Forum King Join Date: Nov 2004 Location: Detroit, Michigan USA Posts: 3,380 View Mike's Gallery	Report This Post! One of the rules of thumb is to make your cuts no more than 1/4" at a time. Once you have gotten the feel for your router and its operation you can alter this based on performance. The reason you ended up with the "tab" on the outside is your material was no longer secured to anything. You can place double sided carpet tape underneath your rings to help hold them in place. Depending on the application you may be able to screw through the ring to hold it in place, this is more secure. To help reduce tear out you can raise your round over bit slightly for the first cut and then you will just be making a fine finish cut on the second pass. __________________ Mike Please edit your profile with a name and location so we can better assist you.
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03-29-2007, 07:31 PM	#18
challagan Retired Moderator Supreme Forum King Join Date: Feb 2006 Location: Iowa Posts: 4,002 View challagan's Gallery	Report This Post! Welcome to the forums! Corey __________________ My Carving Website: The Iowa Woodcarver http://iowacarver.tripod.com/ My Shop Website - Woodshop 51503 http://woodshop51503.tripod.com/
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03-30-2007, 04:51 AM	#19
chadmiha Registered User Jr. Member Join Date: Mar 2007 Posts: 11 View chadmiha's Gallery	Report This Post! Well, here's what I did. The first cut I made was the outside. I clamped the MDF in between 2 horses and made the cut. There was nothing to support the piece from falling to the ground. Then to cut the inner part of the ring I taped the circle to the top of another piece of MDF, set the Jasper and made the inner cut. ( all cut were made with one pass) So, for the 1st cut (outter) should I have something supporting the piece from underneath? And if I'm making too deep of a cut, should I cut half way through the 3/4 MDF, flip the piece and cut the rest out from the other side? I was kinda in a rush (racing sunlight) and hopefully with a couple of tips will do better next time. Thanks again guys... Chad
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