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Reciprocating machine tooling.
This is an addition of the thread "Recipricating Machines".
Johnny Figured we should start a new thread on the topic. To answer Kevin. Kevin, Well, Johnny and I are not really machinists by any stretch of the imagination. What we did was about like this. We really did not think we would get as good of results as we did, so the standars were not kept super high for consistance on the thicknes of the dies them selves. What we did was like this. We took a 3" +/- chunk of 2" round stock. (what we had laying around). We chucked in in the four jaw in the lathe. We first found center, on one side of the stock. Drilled a 1/2 hole about 5/8" deep. Then we took and sharpened a cutter for the angles we were going to cut. Set up the lathe to cut the first angle. From center we machined from center to half the dia. to about 35 deg.. Then from there to the end we machined at approx. 20 deg.. After that we used a die grinder with a christmas tree on the end and opened the ctr just a little for the heck of it. After that we used a right angle die grinder with 80 grit to soften the transitions while in the lathe. We then eased the radii at the end of the outer of the die to give it some releif. Then dressed it again with a 120 grit. the again with some trizac (R), on a air belt sander with 1/4" wide belts. After that we flipped the stock and chucked it again and took a regular electric grider (this is where a radii cutter would have been great for the job), but without one we just said forget it and used the grinder. We slowly ground it and constently checked it with a radious gage we made out of sheet metal. When we were close using 36 grit, got it even closer with 80 grit die grinder, then 120 grit, then brown,red, blue and grey scothbright. After we had it semi, if not perfect we cut the ends off to make the dies in the cold saw. After that we stuck the halves in the lathe again, found center, used a set of dividers, layed out the outer ends of the shanks with a mark, then used the lathe to scribe a outer mark. Then we used a v-anvil in a welding fixture and welded the shanks to the dies. When we got it back to Johnny's, Johnny used scotchbright, 2000grit, and then Mothers(R) polish and a buffing wheel to get the mirror finish on the dies. We know that this is a trial, and if the dies are to last any length of time they should probably be super hard 4130, s-7 or the like and heat treated, but THEY WORK, and well maybe we will sooner then later. We plan to make a few more larger dies in the near future, but this was a good start for some un-knowing slackers. So thats it. Post your dies here. test run 004.jpg Thanks, Bill Heinieken Last edited by jhnarial; 10-11-2009 at 01:52 PM. |
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Thanks Bill for the write-up! Those do look nice!
Kevin H |
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For under $20 you can buy some Kasanite from McMaster-Carr it will harden them. (kinda-sorta)If I remember right, just heat it up with a torch then stick it in the can of Kasanite then heat it again and quench it in water. It comes with instructions. This will case harden it for this application it will work fine you will have to polish them again
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Rick Scott The second mouse gets the cheese! |
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I just did a search on Kasanite but came up empty handed.Were can I find some?
Thanks for the info
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Johnny Arial This forum is dedicated to Metal Shaping. Please stay on topic. |
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Kasenit
Hi Johnny,
Here are two sources for you. I LOVE the customer service at Brownells: http://www.midwayusa.com/viewProduct...tNumber=119479 http://www.brownells.com/.aspx/sid=1...it?mc_id=10000
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-Marcus Hansen Having ADD isn't so bad , you just have to... Hey look! There goes a chicken! Last edited by benchmarc; 10-11-2009 at 07:22 PM. Reason: Phrase it better |
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Johnny,
I've got a 5 lb. can of Kasenite that I've had for years that you are welcome to use. I'm here in K.C. over on 291 between Liberty and the airport. Bill has been over here. Give me a call if you are interested. 734-8211 George |
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I will George
Are you right before the 291 bridge?I work at mod-space right across from station casino on 210
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Johnny Arial This forum is dedicated to Metal Shaping. Please stay on topic. |
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Johnny,
I've have my shop at my house. I'm about 1 mile east of 169 on Cookingham Drive (291) and right across from the old nursery. George |
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Kasenit
Johnny,
Enco has it as well, but you need to spell it without the "e" on the end. John |
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Johnny,
George is a VERY knowledgeable and GOOD guy, you should go see him. He makes alot of his own tools and is a very good person to know. He also loves cars. LOL His place is easy to miss if your not careful, if your guys get set up ill be more than happy to drive you over there. Night. Bill |
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