James - I can't emphasize enough -- how much I appreciate your comment .Your no-nonsense comment is profoundly powerful. You made my day in a huge way. It's exactly what I needed .Thanks again . -- Jim
Rusty - I really appreciate your positive comment . Positive or Negative comments allow me to learn what the viewer wants. My ultimate goal is to share ideas . Comments are the ultimate learning tool. --- Thanks again ! --- Jim
Do you pre grind the tool steel under the carbide first for clearance or grind both the carbide and tool steel at the same time on the diamond wheel?? Like the real time video better than cad drawings….
Chuck - I Pre Grind under the carbide on a pedestal grinder. The material under the carbide is at a greater angle than the Carbide Insert . Thanks for the tip - Video is better than Cad . --- Jim
Has anyone found decent AlOx wheels for those grinders? I can find about two, but they cost more than my grinder cost. For now I just use green stones and sharpen only carbide on mine. If I had an AlOx wheel I could sharpen steel, too.
Tim - I'm not 100% sure of what you are looking for ?? Try this link - it might be a candidate . www.shars.com/6x3-4-d6a2c-cbn-plain-cup-wheel-1 -- Jim
@@felgate11 Not for dry-grinding any sort of steel. That mistake erodes the wheels really fast. Silicon carbide is fine for non-steel grinding, or for very wet steel grinding, but not for dry grinding steel. Not even for removing steel from the end of a toolbit under brazed carbide. If you nick steel with a dry silicon carbide wheel, you need to redress your wheel.
This is an old-school diamond carbide grinding machine, diamond dust pressed into a cast iron (?) disc. I used such a grinder in the early 70s. Silicon carbide (green grit) for roughing, the diamond gives a finer finish. HSS for removing the steel shank below the carbide tip.
Robert - I went out to the grinder to read the RPM Tag . I was covered and not visible. I'm guessing 1750 RPM . I can tell you that the face wheel diameter is 6" . --- Jim
Hey Stanislav - You are obviously are very knowledgeable . Please advise me what angle to use for A.I.S.I / D-2 ASTM A681 / Din 1.2379 / SAE J437 / J438 Thanking you in advance . --- Jim
Stanislav - Your original comment stated that I was 1° off . You didn't know what material I was cutting . You didn't know if it was hard or soft --- I'm confused . -- Jim
@@TangentJim After watching your video, I'm guessing you have it set at about 12degrees. That's good for aluminum. On aluminum, you grind 15 degrees on the face angle. And you would probably grind it from HSS. For regular steel, 8degrees is ideal. If you're going to have steel refined to 900mp, or hardened to 50Hrc, I'd recommend a 6degree setting.
Stanislav - I have two angles on that Tool Bit . The large angle allows me room to sharpen short angle . I only want to grind the carbide tip -- not all of the total height . I snag the base material on a pedestal grinder at a sever angle - allowing me to grind the carbide without loading the fine Diamond Wheel. That's my story and I'm sticking to it , --- Jim
I love the old timers!!
Love your no-nonsense way of talking. Good video.
James - I can't emphasize enough -- how much I appreciate your comment .Your no-nonsense comment
is profoundly powerful. You made my day in a huge way. It's exactly what I needed .Thanks again . -- Jim
More knowledge in his little finger than most of have in total.
Hey Jim, nice video right to the point and how to get a extremely sharp tool. Thanks Joe.
Joe - Like Jack Web of Dragnet said . Just the facts man. -- Jim
Great video
Rusty - I really appreciate your positive comment . Positive or Negative comments allow me to learn what the viewer wants.
My ultimate goal is to share ideas . Comments are the ultimate learning tool. --- Thanks again ! --- Jim
Qual e o grão ( MESH) do diamante usado em sias afinações????
Do you pre grind the tool steel under the carbide first for clearance or grind both the carbide and tool steel at the same time on the diamond wheel?? Like the real time video better than cad drawings….
Chuck - I Pre Grind under the carbide on a pedestal grinder. The material under the carbide is at a greater angle than the Carbide Insert . Thanks for the tip - Video is better than Cad . --- Jim
Smart man
Tim K -- Thank You - I'm just sharing information . -- Jim
Has anyone found decent AlOx wheels for those grinders? I can find about two, but they cost more than my grinder cost.
For now I just use green stones and sharpen only carbide on mine. If I had an AlOx wheel I could sharpen steel, too.
Tim - I'm not 100% sure of what you are looking for ?? Try this link - it might be
a candidate . www.shars.com/6x3-4-d6a2c-cbn-plain-cup-wheel-1 -- Jim
You need a Green, Silicon Carbide wheel, Not AlOx.
@@felgate11 Not for dry-grinding any sort of steel. That mistake erodes the wheels really fast. Silicon carbide is fine for non-steel grinding, or for very wet steel grinding, but not for dry grinding steel. Not even for removing steel from the end of a toolbit under brazed carbide. If you nick steel with a dry silicon carbide wheel, you need to redress your wheel.
This is an old-school diamond carbide grinding machine, diamond dust pressed into a cast iron (?) disc. I used such a grinder in the early 70s. Silicon carbide (green grit) for roughing, the diamond gives a finer finish. HSS for removing the steel shank below the carbide tip.
What rpm was your motor spinning?
Robert - I went out to the grinder to read the RPM Tag . I was covered and not visible. I'm guessing 1750 RPM .
I can tell you that the face wheel diameter is 6" . --- Jim
@@TangentJim , okay, thanks. Do you remember the grit of the wheel?
Robert - When I have a moment - I will take a picture of the Grinding Wheel. It should have some information
on the face of the Wheel. ---- Jim
Robert - Picture of Diamond Grinding Wheel
ruclips.net/channel/UCnVOj-ngZVRuMS06EPkuN1Acommunity
Lubrifi ça va nettoyer la meule
BrunoCarretero3764 - I wish I could communicate in your language . - Jim
You have the angle set too high. It should be set at 8 degrees.
Hey Stanislav - You are obviously are very knowledgeable . Please advise me what angle to use for A.I.S.I / D-2
ASTM A681 / Din 1.2379 / SAE J437 / J438 Thanking you in advance . --- Jim
@@TangentJim It depends if the steel is hardened or not. Generally a smaller angle is given to harder material.
Stanislav - Your original comment stated that I was 1° off . You didn't know what material I was cutting .
You didn't know if it was hard or soft --- I'm confused . -- Jim
@@TangentJim After watching your video, I'm guessing you have it set at about 12degrees. That's good for aluminum. On aluminum, you grind 15 degrees on the face angle. And you would probably grind it from HSS. For regular steel, 8degrees is ideal. If you're going to have steel refined to 900mp, or hardened to 50Hrc, I'd recommend a 6degree setting.
Stanislav - I have two angles on that Tool Bit . The large angle allows me room to sharpen short angle . I only want to grind the carbide
tip -- not all of the total height . I snag the base material on a pedestal grinder at a sever angle - allowing me to grind the carbide without
loading the fine Diamond Wheel. That's my story and I'm sticking to it , --- Jim