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Type: Posts; User: Rickyb

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  1. Replies
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    None if us know any details. That is why all the...

    None if us know any details. That is why all the answers are general in nature. General, just like the query.
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    Yes the screw body is intension and all the...

    Yes the screw body is intension and all the threads are in shear. Don’t lose sight of the fact that a significant % of their strength is already being used by the original torque of the assembly.
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    The threats in aluminum 1” thick should be about...

    The threats in aluminum 1” thick should be about equal to the strength of the 3/8 fastener. That would be a basic pull out strength. As you are not breaking fasteners your focus can be on the shear...
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    Suburban tool and solid rock machining for...

    Suburban tool and solid rock machining for surface grinding.
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    This is essentially a facing operation. ...

    This is essentially a facing operation. Concentricity is not important but parallism is. Make a split ring to fit the od, and use parallels to set the back side then go at it. Facing rather than...
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    There is a very strange quirk in the physics of...

    There is a very strange quirk in the physics of tempering. Plain carbon and alloy steels have a memory. If heated below their original tempering temperature there is no appreciable drop in...
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    I agree that the geometry of carbide tip is what...

    I agree that the geometry of carbide tip is what makes the difference. The real test would be with a hss insert of similar geometry. My limited experience is with a cobalt blade where I ground a...
  8. Thread: hook scraper

    by Rickyb
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    1,239

    Took another look and there is a letter P inside...

    Took another look and there is a letter P inside of the letter C. Could not find the logo in several searches. I've had it for 20+ years and don't remember where I got it.
  9. Thread: hook scraper

    by Rickyb
    Replies
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    1,239

    I have one for just that purpose but in high...

    I have one for just that purpose but in high speed steel. It is. Small and looks much like a standard deburring tool. Mfgs name is gone. It is yellow with a large C in the cap. Has a small 3/8...
  10. You are right on. In two ways. That this belongs...

    You are right on. In two ways. That this belongs somewhere else and the study is total misleading bullshit.
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    I was beginning to think I was the only one....

    I was beginning to think I was the only one. These are basically no mass, nothing between you and the tap. Far more sensitive than the standard tap wrench.
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    100% on chatter. Last time I tried something...

    100% on chatter. Last time I tried something close to that I could get rid of the chatter. Ended up gripping the ID of the outer ring. Smooth as butter after that.
  13. As an added precaution you can drop a magnet or...

    As an added precaution you can drop a magnet or two into the sump to permanently hold the errant chips. Drain and filter the oil to collect the floaters.
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    May not feel like it but glass is by definition a...

    May not feel like it but glass is by definition a liquid. It does flow over time.
  15. Your friend illustrates my point precisely. A...

    Your friend illustrates my point precisely. A life time in design without really understanding basic concepts. There is a huge difference between bolts and cap screws. Different tolerances,...
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    Nice set of spanners. I've had to make 1/2 of...

    Nice set of spanners. I've had to make 1/2 of them in the past couple years for various dissassemblies. Mine are not that pretty.
  17. Eaglemike, It was simply a metaphor to...

    Eaglemike,
    It was simply a metaphor to illustrate the level of knowledge of some of the posters in this thread. Not specific to the use of a bolt or capscrew. The most basic knowledge is the...
  18. You are so close but your assumption as to how...

    You are so close but your assumption as to how the joint was improved is incorrect. Again, fasteners are not to be loaded in shear. The shear is taken up by the joint. The clamp load provided by...
  19. Itgseb, fasteners are designed to be in tension,...

    Itgseb, fasteners are designed to be in tension, not bending or shear. Their geometry make them perform very poorly in bending fatigue and shear. If your fastener cycles through zero in tension or...
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    Poll: A separate forum would be best. Call it "the...

    A separate forum would be best. Call it "the lonely hearts club"! Then we don't have to step around all that bull sh**.
  21. You may have better response posting on the...

    You may have better response posting on the Homeshop Machinist forum. This is not a hobby site. Discussions of hobby machines are not allowed. Good luck, there is no end to the machining learning...
  22. Dian, I should have read your post before my last...

    Dian, I should have read your post before my last reply. The high level of austenite is retained throughout the structure, sub surface. The way I understand it is that the scuffed surface is fully...
  23. Retained austenite, if I recall put to levels of...

    Retained austenite, if I recall put to levels of 25%, converts to untempered martensite by physical scuffing, or work hardening if you prefer. Work hardening is somewhat of a misnomer as it is truly...
  24. Another option? I think a steel with high...

    Another option? I think a steel with high retained austenite would provide superior wear resistance. Can't provide a material spec. Teeth on loader buckets have high levels. As the surface is...
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    My last gallon has definitely separated. Bottom...

    My last gallon has definitely separated. Bottom 1/2 of spray bottles is milky.
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