Cutting Tool (Herramienta de corte)

Ver también http://www.instructables.com/id/Cutting-tools-2-herramientas-de-corte-2/

Cuando empecé a hacer torneado en madera, no tardé en darme cuenta de lo importante que es tener harramientas de corte de buena calidad. Pero lo bueno cuesta. Por lo tanto, empecé a buscar alternativas, y he conseguido algunas cosas interesantes, aunque creo que esa búsqueda no acaba nunca.

Dado que desde hace más de 10 días estoy bastante resfriado (los primeros fríos me cazaron desprevenido), no puedo darme el lujo de trabajar afuera, por más que están haciendo unos días de otoño espléndidos. Así que, luego de guardar cama unos días, empecé a hacer pequeños trabajitos. Me hubiera gustado estrenar la fragua, pero creo que inevitablemente me habría afectado el humo.

Hace un tiempo tuve que cortar con la amoladora de mano un rulemán para poder extraerlo, y como yo no tiro nada a la basura, me guardé los pedazos. Mi idea es enderezar los trozos de pista, para luego soldarlos al extremo de una varilla de hierro y usarlos como herramientas de corte para el torno. Pero por el momento, me limitaré a tratar de aprovechar una de las bolitas, de la manera que explicaré a continuación.


See also http://www.instructables.com/id/Cutting-tools-2-herramientas-de-corte-2/

When I started doing wood turning, I soon realized how important it is to have tools of good quality. But the good costs. Therefore, I started looking for alternatives, and I got some interesting things, but I think that search never ends.

Because since more than 10 days I'm pretty cold (the first cold hunted me off guard), I can not afford to work outside, even though they are doing splendid autumn days. So after a few days in bed, I started doing small jobs. I would have liked to launch the forge, but I think I would have inevitably affected by the smoke.

Some time ago I had to cut with the hand grinder a ball bearing to remove it, and as I don't throw away anything, I kept the pieces. My idea is to straighten the track pieces and then weld them to the end of a rod of iron and use it as cutting tools for the lathe. But for now, I just try to take advantage of the balls, the way I will explain.

Step 1: Measuring and drilling (midiendo y agujereando)

La bolita mide casi 8 mm de diámetro. Así que hice un agujero de esa medida en una varilla de hierro. Luego avellané ambos lados del agujero, y corté con la amoladora el borde del agujero más cercano al extremo de la varilla. Con algunos martillazos logré que la bolita de acero quedara firmemente apretada dentro del agujero.

The ball gage is about 8 mm. So I made a hole of that diameter in a rod of iron. Then countersink both sides of the hole, and cut with the grinder the edge of the hole near the end of the rod. With some hammering, the steel ball was firmly pressed into the hole.

Comments

[heelercjwww]

Cool instructable, HAve you tried silver solder instead of welding? it might work better for the small parts

[rimar2000]

Surely, but I don't dare... Never I did it, and I have not a teacher.

[Anarx]

Nice use of scrap material's, considering your newly made forge, keep an eye out for spring steel. leaf springs coil springs etc they make some of the best chisel's i have used (for metal work though). and of course you are on the right track with using the barrings, perhaps you can use the Rase's (not sure on the spelling for that) of the barring's as well for some good high quality tool steel.

Keep up the innovative work.

[rimar2000]

Thanks for the comment, Anarx. Yes, some weeks ago I pick up from the waste a nice steel spring, it is waiting for transform into cutting tool.

I am doing an instructable about bearings cutting tool, today I must be something using them in the lathe for publish. Yes, I am using that you name rase's, I name them tracks but I don't know the correct English word.

[Tux0r]

Very, very good idea, and the correct English word is; race. I might just make one of these even though I don't do wood turning

[rimar2000]

Thanks for the comment, and too for the correction. I will edit it as soon as possible.

Last saturday I made a very good "cortafierro" (iron cutter?) using the stem of a wasted car buffer (of suspension, stay system)

[Tux0r]

Oh no problem, and if you could post a picture of your iron cutter that would be nice. Now, from what I am visualizing, it seems like you made either what I call a "cold cut" or a "hot cut", the cold cut is basically a cold chisel for metal and the hot cut is a tool for cutting hot metal. I think I might have a broken shock absorber (suspension buffer) laying around here, so I might make something out of it...thats if I can make a forge that is large enough

[rimar2000]

I added the chisel's photo in Step 8 of My Forge

[Tux0r]

Oh, thank you, that looks like it would be more of a cold chisel to me. If I remember right hot cuts have two edges, like a flat ground knife.

[rimar2000]

I think there is only one "chisel". You can see it here.

[notingkool]

muy buena idea, le diste temple? El de abajo tiene razon, usa tu forja para endezar una de las pistas del ruleman. Si no queres hacer una herramienta de corte, podes hacer un cuchillo.

very good idea, do you temper it?
The one below is right, use your forge to straing one of the tracks of the bearing. If you do not want to make a cutting tool, you can make a knife.

[rimar2000]

A estas no las templé, y lo de las pistas ya lo hice y lo publiqué acá. Gracias por el comentario.

[notingkool]

ah, buenisimo, lo hiciste rapidisimo. Por ahi puedan llegar a servir para tornear metal. saludos

[rimar2000]

Es probable, lo voy a intentar un día de estos.

[jagr60]

Rimar, you can use broken bearing, straighten it in your forge and than sharpen. It is very good steel.

[rimar2000]

Thanks for the comment, jagr60, yesterday I did it. Today I will publish the instructable.

[tom311571]

Great job! Gives me some other ideas. Thanks!

[rimar2000]

Thanks, Tom. I am doing a new instructable, maybe tomorrow I will publish it.

[Phil B]

Wow! You went to a lot of work to achieve a hardened cutting edge. Can you buy hardening electrodes for an arc welder? They are used to put a hard surface on plow shares and build them up after they have been worn down by much use in the soil. With them you could cover mild steel with a few beads and grind them down to the shape you want for your cutter. It is just a thought.

[rimar2000]

Thanks, Phil!

I remember my father used that method, during 50's, but with oxyacetylene welding. The product was named Mil-Agro (milagro=miracle) and was really awesome. But after a seek last year, I can't find it nor any similar.

I asked at "La Casa del Soldador" (welder's house) and they sold me stainless steel electrodes. They are expensive, difficult to use, and I don't think are so hard as a ball bearing.

Today I feel a bit better, the day is sunny and mild, so I will try to launch my forge to straighten a broken ball bearing. Then I will post the result, obviously.

By now you've realized that my motivation is not doing something technically right, or most convenient, but just experiment and have fun. Otherwise, it would have been better to go to La Plata and buy two or three good cutting tools, they aren't so expensive.

[SharpyWarpy]

Hope your health continues to improve. Yes, we do all this stuff for fun. And for what we learn along the way. There is no teacher like experience. I for one truly appreciate you sharing your experiences.

[rimar2000]

Thanks, SharpyWarpy. I hope may sleep al least 5 hours that night. I am doing a new instructable right now.

[l8nite]

a lot of work but the reward comes in satisfaction every time you use the tool you made

[rimar2000]

Thanks, I8nite!

Well, maybe can seem a lot of work, but really went 2 hours of light work: to cut a piece of iron bar, to do a hole, some hammering, a tiny welding (the only delicate part) another cut, and then seat the edge.

[brunoip]

No te cansas de hacer cosas grosas, seguí así. Saludos

[rimar2000]

Gracias Bruno, fijate lo que le contesté a Phil B. Un abrazo.