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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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drill press holding fixture
I gave blood this morning. All over my radial arm drill that I got a couple
months ago. The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made a quick revolution before i could get out of the way. I need to get a better way to hold work in the drill press. A couple vice grips and pieces of tubing just aren't getting it. I've tried using a spare Kurt type vise, but that is cumbersome. half the parts won't fit in and its difficult to quickly line the work up under the drill and through an open spot in the vise. what's normally used to hold all sorts of odd ball one of parts in a large drill? Just fabrication grade work here. I use a mill and bolt the part to it for stuff needing accuracy. Karl |
#2
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drill press holding fixture
Karl Townsend wrote:
I gave blood this morning. All over my radial arm drill that I got a couple months ago. The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made a quick revolution before i could get out of the way. I need to get a better way to hold work in the drill press. A couple vice grips and pieces of tubing just aren't getting it. I've tried using a spare Kurt type vise, but that is cumbersome. half the parts won't fit in and its difficult to quickly line the work up under the drill and through an open spot in the vise. what's normally used to hold all sorts of odd ball one of parts in a large drill? Just fabrication grade work here. I use a mill and bolt the part to it for stuff needing accuracy. You could try mounting the vise to a piece of 1/4 steel and then mounting an arm on the steel that can be pushed up against the drill press column. That will stop the rotational force and still let you position the work freehand. |
#3
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drill press holding fixture
On Wed, 22 Aug 2007 15:33:27 -0500, "Karl Townsend"
wrote: I gave blood this morning. All over my radial arm drill that I got a couple months ago. The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made a quick revolution before i could get out of the way. I need to get a better way to hold work in the drill press. A couple vice grips and pieces of tubing just aren't getting it. I've tried using a spare Kurt type vise, but that is cumbersome. half the parts won't fit in and its difficult to quickly line the work up under the drill and through an open spot in the vise. what's normally used to hold all sorts of odd ball one of parts in a large drill? Just fabrication grade work here. I use a mill and bolt the part to it for stuff needing accuracy. Karl A decent drill press vice (lighter than a milling vice) is handy for smaller stuff. If there's a chance that it might get away from you then either clamp it with a T bolt, block and goose-neck clamp or just leave a T bolt sticking up out of a slot so that the vice will run into it if it tries to take off. Won't stop the work riding up the drill, but will act as a second hand if things get a bit lively. If the drill is big enough and the work thin enough that you might not be able to hold it down, then go back to clamping the vice on the table. Better still, use the drill properly... Clamp the work solidly to the table with goose neck clamps, blocks and T bolts or similar and a bit of scrap for protecting the table, then move the drill head to where the hole needs to be. That's why its a radial arm drill :-) Oh, and keep some superglue and insulting tape where you can grab them. Not for holding the work down, but for temporary leak prevention to bodily parts (Actually, I have used superglue many times for work clamping). Regards Mark Rand (I do egg sucking lessons as well :-) |
#4
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drill press holding fixture
Karl Townsend wrote:
I gave blood this morning. All over my radial arm drill that I got a couple months ago. The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made a quick revolution before i could get out of the way. I need to get a better way to hold work in the drill press. A couple vice grips and pieces of tubing just aren't getting it. I've tried using a spare Kurt type vise, but that is cumbersome. half the parts won't fit in and its difficult to quickly line the work up under the drill and through an open spot in the vise. what's normally used to hold all sorts of odd ball one of parts in a large drill? Just fabrication grade work here. I use a mill and bolt the part to it for stuff needing accuracy. Karl For smaller work on drill presses those quick acting cam type vices work well. They are typically heavy enough to be hand held and slid around to align the work under the drill. http://www.use-enco.com/CGI/INSRIT?P...PARTPG=INLMK32 The above is a Wilton, the Enco brand looks the same and is somewhat less expensive. There is a similar vice I've seen (never used one) that has stacks of swiveling plates instead of regular jaws to hold other than square work. Enco doesn't appear to have one but I think I'd like to get one. The one I saw isn't quick acting but has a screw. To hold work that is too big or too scary clamp it to the table with T bolts and something like these hold down clamps. http://www.use-enco.com/CGI/INSRIT?P...&PARTPG=INLMK3 With a radial drill and work clamped directly to the table a good way to pick up a center punch mark is to chuck a dead center or a rod ground to a similar point and with the column and head loose and spindle running (I was always taught to use reverse but I don't think it matters) set the point in the punch mark then gently clamp the head and arm. You'll be right over the punch mark. Paul -- ----------------------------------------- It's a Linux world....well, it oughta be. ----------------------------------------- |
#5
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drill press holding fixture
A lot of stuff can be clamped to a sacrificial wooden board that is
held in a vise. |
#6
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drill press holding fixture
On Wed, 22 Aug 2007 18:19:46 -0500, Paul wrote:
Karl Townsend wrote: I gave blood this morning. All over my radial arm drill that I got a couple months ago. The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made a quick revolution before i could get out of the way. I need to get a better way to hold work in the drill press. A couple vice grips and pieces of tubing just aren't getting it. I've tried using a spare Kurt type vise, but that is cumbersome. half the parts won't fit in and its difficult to quickly line the work up under the drill and through an open spot in the vise. what's normally used to hold all sorts of odd ball one of parts in a large drill? Just fabrication grade work here. I use a mill and bolt the part to it for stuff needing accuracy. Karl For smaller work on drill presses those quick acting cam type vices work well. They are typically heavy enough to be hand held and slid around to align the work under the drill. http://www.use-enco.com/CGI/INSRIT?P...PARTPG=INLMK32 The above is a Wilton, the Enco brand looks the same and is somewhat less expensive. I have a vise like this, though I have not yet put it in my DP, it is very handy. i |
#7
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drill press holding fixture
there is a very cool drill press vise called "float lock" - they show up
from time to time on ebay - a complete one has a block to attach to the table, and will hold virtually any part up to about 12 or 18 inches - you prrobably want to find one of them "Karl Townsend" wrote in message anews.com... I gave blood this morning. All over my radial arm drill that I got a couple months ago. The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made a quick revolution before i could get out of the way. I need to get a better way to hold work in the drill press. A couple vice grips and pieces of tubing just aren't getting it. I've tried using a spare Kurt type vise, but that is cumbersome. half the parts won't fit in and its difficult to quickly line the work up under the drill and through an open spot in the vise. what's normally used to hold all sorts of odd ball one of parts in a large drill? Just fabrication grade work here. I use a mill and bolt the part to it for stuff needing accuracy. Karl -- Posted via a free Usenet account from http://www.teranews.com |
#8
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drill press holding fixture
Karl Townsend wrote:
The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made Â*a quick revolution before i could get out of the way. Hope it didn't hurt too much, but a bit of pain is OK. :-) We all learn quicker by punishment. EG But what size of drill? Was the pilot hole too big? Sheet metal? Too small vice (not heavy enough)? Normaly, a stop in one of the T-slots is enough if you can prevent the vice from rotating. That stop is just a knurled round, about 100..150 mm long with a thread at one end and a mating T-slot screw. Nick PS: Two cuts last sunday: One when I stumbled over something laying in the way and me graping for hold. Unfortunatly, that hold was a bit in the shaper sticking out and making a small cut. Moved that out of the way. And then pulling out some tool from a holder for several MT4 tools and drawing my finger over the edge of some 30mm mill. Outch! No more sharp tools in that holder. Lesson learned. -- The lowcost-DRO: http://www.yadro.de |
#9
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drill press holding fixture
there is a very cool drill press vise called "float lock" - they show up from time to time on ebay - a complete one has a block to attach to the table, and will hold virtually any part up to about 12 or 18 inches - you prrobably want to find one of them You mean this? http://www.eaglerockonline.com/index...w&LineItem=125 I have one. Its not long enough for the handle to get to the column on my radial arm drill press. So, i haven't used it much. You've got me thinking; I'll make up something to catch this unit from rotation that can be quickly removed when I need the full 2' throat. Karl |
#10
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drill press holding fixture
But what size of drill? Was the pilot hole too big? Sheet metal? Too small vice (not heavy enough)? Normaly, a stop in one of the T-slots is enough if you can prevent the vice from rotating. That stop is just a knurled round, about 100..150 mm long with a thread at one end and a mating T-slot screw. I was in a hurry, first mistake. I need a bracket to mount a panel mount on/off rotating electrical switch. Found a piece of 1/8 x 3" by long AL at the finger brake. Bent it to a 90 and cut it to length, second mistake (no way to easily clamp now) Small drill had 1/2" in chuck so I punched and drilled pilot. Went over to big drill with 1 3/16 bit, clamped on 3' 1"x1" tube with vice grip and sat it on a small piece of 1" thick metal with a hole in it on the table. Flimsy set up, but I'm in a hurry. Its the third mistake that will really get you. You're right, there's enough pain that I will get a large drill press vise for this machine and find a way to quickly mount and remove it Karl |
#11
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drill press holding fixture
On Aug 22, 4:33 pm, "Karl Townsend"
wrote: I gave blood this morning. All over my radial arm drill that I got a couple months ago. The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made a quick revolution before i could get out of the way. Radials are serious machines and you *MUST* clamp every part. A guy at a customer's shop (about two years ago) had his arm PULLED OFF as his shop coat got caught in a radial. (Since reattached - has some feeling/ movement) Try and train your eye to be able to see if you've clamped the head over your center punch/drill mark when you're drilling. Eventually you don't need to stop the machine. By plunging the drill bit into the hole, clamping the head, and retracting it, you can tell if the bit is off center just be watching it come out of the hole. They will spring away if they're not right. You'll be able to drill quite accuratly, but it does take some practice. I used to have to drill and tap hundreds of M16 holes in the trim die shoes during fitting. If I had stopped the machine to realign the head every time, I would have had my ass chewed hourly. Good luck. Regards, Robin |
#12
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drill press holding fixture
For me the thing about work holding on the drill press is set up time.
I.e., it's too much. Particularly, using a vise and bolting the vise down through the slots. Ack! I have improved that somewhat with a quick-acting vise & having it mounted on a plate which I clamp with Kant-Twists: http://home.comcast.net/~bobengelhardt/dpvise.jpg An idea that I had and never got around to implementing was using a pneumatic cylinder that would hold work down on the table. Maybe a 1" bore, 4" stroke, with a foot to fit common shapes. Probably some linkage to keep things in place. I actually have a cylinder, so it could get done some day. I'd be interested to hear if someone has tried this sort of thing. Particularly if it didn't work, so I'd save the trouble. Bob |
#13
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drill press holding fixture
For me the thing about work holding on the drill press is set up time. I.e., it's too much. Particularly, using a vise and bolting the vise down through the slots. Ack! I have improved that somewhat with a quick-acting vise & having it mounted on a plate which I clamp with Kant-Twists: http://home.comcast.net/~bobengelhardt/dpvise.jpg Thanks for the tip. I'll do the same thing. It seems like just as soon as I bolt a vise on, I need a quick job with nothing in the way. Karl |
#14
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drill press holding fixture
On Wed, 22 Aug 2007 15:33:27 -0500, "Karl Townsend"
wrote: I gave blood this morning. All over my radial arm drill that I got a couple months ago. The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made a quick revolution before i could get out of the way. I've just thought of the other thing to get... A pendulum or telescopic antenna type trip switch for the drill, optionally connected to a DC injection plug braking system can be a life saver. The pendulum/antenna hangs down so that if the work gets away from you, you or it hits the switch and cuts the motor power. In the case of the plug braking system, it injects a lot of DC into the motor windings and the motor stops in a fraction of a turn. We have this setup on the little 4' x 3' table Richmond radial arm drill in the Labs workshop at work and it is very effective. example at:- http://rswww.com search for part # 498-5567 Hope the bleeding's stopped by now! regards Mark Rand RTFM |
#15
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drill press holding fixture
Keywords:
On Wed, 22 Aug 2007 15:33:27 -0500, "Karl Townsend" wrote: I gave blood this morning. All over my radial arm drill that I got a couple months ago. The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made a quick revolution before i could get out of the way. I had a similar adventure in my youth. No serious harm done, but it definitely gets your attention. My favorite solution is a quick acting cam clamp that slides up & down the drill press column. The shop I used to frequent at MIT had one, and I bought one for my Dad's drill press and got one for the drill press at work. Unfortunately, the last time I looked they had vanished off the face of the earth. I've changed jobs & would love to have one on the drill press in our lab, but there are none to be found. They were black oxide coated, with a small (~ 1 1/2" square) aluminum foot. There was a small round lever that activated the clamp. When it was loose, you could slide the clamp up & down the column and rotate it freely. Once you had the foot parked on the work, you flipped the lever around and it simultaneously locked the clamp on the column and applied considerable downward force on the work. I never had one slip on me. You could also use it to hold a small vise to the table. They probably show up on eBay occasionally, but I haven't looked recently. Doug White |
#16
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drill press holding fixture
yes, that is the one (note, I'm top posting to annoy the heck out of those
bothered by such violations of non-existant rules) Most of the time the little attachment block, shown on the far right of the vise in the image, is lost. You are supposed to affixt that attachment block into a T slot, the round part of the vise slides in the block (unless you clamp it down), so the whole assembly is easy to move in translation but impossible to rotate, just what you want. You don't need the handle to hit the column, just make the missing little block "Karl Townsend" wrote in message anews.com... there is a very cool drill press vise called "float lock" - they show up from time to time on ebay - a complete one has a block to attach to the table, and will hold virtually any part up to about 12 or 18 inches - you prrobably want to find one of them You mean this? http://www.eaglerockonline.com/index...w&LineItem=125 I have one. Its not long enough for the handle to get to the column on my radial arm drill press. So, i haven't used it much. You've got me thinking; I'll make up something to catch this unit from rotation that can be quickly removed when I need the full 2' throat. Karl -- Posted via a free Usenet account from http://www.teranews.com |
#17
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drill press holding fixture
On Thu, 23 Aug 2007 17:08:12 -0400, Bob Engelhardt
wrote: For me the thing about work holding on the drill press is set up time. I.e., it's too much. Particularly, using a vise and bolting the vise down through the slots. Ack! I have improved that somewhat with a quick-acting vise & having it mounted on a plate which I clamp with Kant-Twists: http://home.comcast.net/~bobengelhardt/dpvise.jpg An idea that I had and never got around to implementing was using a pneumatic cylinder that would hold work down on the table. Maybe a 1" bore, 4" stroke, with a foot to fit common shapes. Probably some linkage to keep things in place. I actually have a cylinder, so it could get done some day. I'd be interested to hear if someone has tried this sort of thing. Particularly if it didn't work, so I'd save the trouble. Bob I use Kant-Twists (Damn nice product) clamps too. I usually clamp right to the to top of the vise with one big one. If I feel more hold down power is needed I'll add some more clamps. I like the Vise-Grip C-Clamp pliers. Like this: http://www.use-enco.com/CGI/INSRIT?P...PARTPG=INLMK32 The tips are small enough to fit into many places that other clamps can't. I don't have any with the swivel pads, but if come across a deal on some... I have several different size/type vises used here and there. So I'm a bit reluctant to bolt a large plate underneath. -- Leon Fisk Grand Rapids MI/Zone 5b Remove no.spam for email |
#18
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drill press holding fixture
Mark Rand wrote:
Oh, and keep some superglue and insulting tape where you can grab them. Not for holding the work down, but for temporary leak prevention to bodily parts (Actually, I have used superglue many times for work clamping). Insulting tape? Do you always add insult to injury? -- Service to my country? Been there, Done that, and I've got my DD214 to prove it. Member of DAV #85. Michael A. Terrell Central Florida |
#19
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drill press holding fixture
On Aug 23, 7:14 am, "Karl Townsend"
wrote: You mean this?http://www.eaglerockonline.com/index...w&LineItem=125 I have one. Its not long enough for the handle to get to the column on my radial armdrill press. So, i haven't used it much. You've got me thinking; I'll make up something to catch this unit from rotation that can be quickly removed when I need the full 2' throat. To me, the key is to install the mounting clamp. I wasn't 100% on drilling a hole in my drill press table at home. But I drilled one about eight inches to the right and two inches closer to the front of the table from where the quill touches. You can slide the clamp, swivel it parallel to the table, and even rotate it up from the table. You then tighten the clamp. It stays installed and I usually leave it with a little cheap "toolmaker' s vise" in the jaw. The vise mounted on a plate is the single best tip I have seen in years. As soon as pictures were first posted, I started looking for a used Heinrich. Found a five inch, mounted it on a large plate. Slide it anywhere on the big Clausing table at work and a combination of two hold down clamps will hold it. Post of the decade. As for the hold-down clamp that attaches to the column .. . . My favorite solution is a quick acting cam clamp that slides up & down the drill press column. The shop I used to frequent at MIT had one, and I bought one for my Dad's drill press and got one for the drill press at work. Unfortunately, the last time I looked they had vanished off the face of the earth. I've changed jobs & would love to have one on the drill press in our lab, but there are none to be found. The original was the Welch Cam-Lock Drill Press Clamp. Reid Tool sold them for years. Travers has (at least they did a few months ago), an import copy under the TTC brand. On the column if you need it. Out of the way, if you don't. If you drill much plate or flat material, well worth the money. TAW |
#20
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drill press holding fixture
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#21
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drill press holding fixture
yes, that is the one (note, I'm top posting to annoy the heck out of those bothered by such violations of non-existant rules) Most of the time the little attachment block, shown on the far right of the vise in the image, is lost. You are supposed to affixt that attachment block into a T slot, the round part of the vise slides in the block (unless you clamp it down), so the whole assembly is easy to move in translation but impossible to rotate, just what you want. You don't need the handle to hit the column, just make the missing little block I never even knew I had a part missing. thanks for pointing it out. I'll fix this and my float lock will see a lot more service. Karl |
#22
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drill press holding fixture
Travers part #61-171-001. $77 + SH. Looks like you could make one. But it also looks like it wouldn't work on a drill press that has a rack on the side of the column for table raise/lower. Even if you modified it to mount around the rack, it couldn't swivel on the column. This wouldn't work on my machine (6" column with rack, unit is 2 3/4" for no rack) but looks handy for anybody that has this size drill press. Karl |
#23
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drill press holding fixture
According to William Noble :
yes, that is the one (note, I'm top posting to annoy the heck out of those bothered by such violations of non-existant rules) Most of the time the little attachment block, shown on the far right of the vise in the image, is lost. You are supposed to affixt that attachment block into a T slot, the round part of the vise slides in the block (unless you clamp it down), so the whole assembly is easy to move in translation but impossible to rotate, just what you want. You don't need the handle to hit the column, just make the missing little block The one which I have has that block designed to clamp to the edge of the table, instead of to a T-slot. Since my drill press (A Taiwan made one from about 1977 or so) has a round table which is too small for that, I have been keeping the Float-vise around waiting for a larger drill press with which to use it. However, I think that I will now make a collar to slide on the column just above the table and to secure the sliding block fit for the arm. That should allow me to use it with the current drill press, and to swing it aside when it is not appropriate. Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
#25
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drill press holding fixture
On Aug 22, 3:33 pm, "Karl Townsend"
wrote: I gave blood this morning. All over my radial arm drill that I got a couple months ago. The part snatched as the drill broke though. it rode up the drill and then popped the vice grip holding clamp off and threw it. Then the work made made a quick revolution before i could get out of the way. I need to get a better way to hold work in the drill press. A couple vice grips and pieces of tubing just aren't getting it. I've tried using a spare Kurt type vise, but that is cumbersome. half the parts won't fit in and its difficult to quickly line the work up under the drill and through an open spot in the vise. what's normally used to hold all sorts of odd ball one of parts in a large drill? Just fabrication grade work here. I use a mill and bolt the part to it for stuff needing accuracy. Karl Sorry to hear of the involuntary donation....didn't even get a chance to have a pretty nurse to flirt with. The recommendations for the vise on a plate and a Welch Cam-Lock Drill Press Clamp should fit the bill. A drill press is a deceptively dangerous machine...I have known several people doing do-it-yourself amputations by getting in a hurry. TMT |
#26
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drill press holding fixture
DoN. Nichols wrote:
The one which I have has that block designed to clamp to the edge of the table, instead of to a T-slot. ... However, I think that I will now make a collar to slide on the column just above the table and to secure the sliding block fit for the arm. That should allow me to use it with the current drill press, and to swing it aside when it is not appropriate. Oh - good idea! Much better than the original way. Why didn't I think of that?! Bob |
#27
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drill press holding fixture
According to Bob Engelhardt :
DoN. Nichols wrote: [ ... ] However, I think that I will now make a collar to slide on the column just above the table and to secure the sliding block fit for the arm. That should allow me to use it with the current drill press, and to swing it aside when it is not appropriate. Oh - good idea! Much better than the original way. Why didn't I think of that?! Bob Why didn't *I* think of that before this discussion came up? All those years when I could have been getting the benefit of mine. :-) Enjoy, DoN. -- Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
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