hob

D

Dennis Sorensen

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hob
3 entries found.

1. 1hob (noun)
2. 2hob (noun)
3. 3hob (transitive verb)


Main Entry:
1hob Listen to the pronunciation of 1hob
Pronunciation:
\ˈhäb\
Function:
noun
Etymology:
Middle English hobbe, from Hobbe, nickname for Robert
Date:
15th century

1dialect English : hobgoblin , elf2: mischief , trouble —used with play and raise<always raising hob>


Would someone explain what Kathy (Bill) is referring to... I doubt it will be explained in any of his postings ... and I am sure it has nothing to do with the dictionaries definition.

What it looks like, how to use it, etc...
 
Last edited by a moderator:
Calfee World

In Calfee World a hob is used to burnish the chamber leade. SPEC 7, SOLD.
 
Dennis Sorenson

Dennis
I found out for myself you can't look it up in the dictionary as well.
Go to Wikipedia and as Al Nyhus said look up gear tooth hob.
I imagine James is right in his description as I couldn't find a Leade Finish Hob on google except for Bill's post.
Lynn
 
"Reamer" without cutting surfaces and same dimensions as the reamer used for cutting chamber.Used by Ans. as well. To "wash out" or squeeze tool marks away :)
Øyvind
 
C'mon Dennis, why the attitude? I think Bill's using proper terminology........ the term "hob" has been a catchall term here in America for years, goes clear back into the middle ages.

Generally IME hob can be used to describe a single-function blunt tool or projection. Also a forming hob, any sort of a stout rounded projection over which one works metal. We used burnishing hobs for all sorts of things in toolmaking, from breaking edges to stretching cylinders to tying the Bimini Twist to milking goats....... well maybe not milking goats after all :eek:

Here's the first entry that popped up in my Yahoo search:


noun

1. a projecting ledge at the back or side of a fireplace, used for keeping a kettle, saucepan, etc. warm
2. a peg used as a target in quoits, etc.
3. a device for cutting teeth in a gear blank, etc.
4. Gas ring or burner.
5. Tool purpose-built by Calfee used to swage the leade ramp into the riflings of a rifled bore.....


etc etc.....with usages and etymology.



well maybe I made the Calfee one up :D



I think that a hob differs from a knob in that the hob is gener'ly polished and stouter than a knob............. so when one polishes his knob he may well be ........ :eek: ...... anyways, hobs is smoother and harder than knobs, sometimes. but knobs can sometimes get one out of the stinkhole, or into it for that matter in which case one hopes to cut a jack....... so they're each useful in their own way. And similiar but with certain unforeseeable peculiarities...... yet different.


IMO a hob used for cutting teeth would have to be fairly edged, blunt the prow and ground like a shaper tooth or cutting bit......... hence a more proper designation for the geartooth cutter might be a hobbit.......maybe THAT's where the goatmilching reference originated.....hmmmmmmm.


hth


al
 
Hobs, to me, have always been associated with cutting specific profiles in parts such as gears or splines. The profile of the cutter is specific to the part profile. This is real tricky when cutting helical or involute gears, but I have not done this.
I don't know what Calfee is trying to describe but I ASSUMED that it was a leade reamer. Why else would he be concerned with alloying elements in the tool? A tool to "iron" the leade could be ground from a drill blank or made from 1095 or WHDR, no need for O1 or similar tool steel. But O1 is cheap and easy to find.
The heat treat and grinding of small cutting tools is critical if you want quality tools.
Kathy is hard to follow sometimes, but I keep reading some of his posts.
 
Al ... it isn't an attitude... I have never heard of a hob before. I wouldn't be surprised if others have not as well. Probably a different story with those who are specifically trained as a machinist. If I were to wait for a clear explanation without posting this question I may never know the answer...

What it looks like, how to use it, etc...

From Bill's post I kind of assumed it was some kind of tool you would rub the reamed "throat" of the chamber. I just went to a dictionary...
 
Answers

Dennis Sorensen said:
Al ... it isn't an attitude... I have never heard of a hob before. I wouldn't be surprised if others have not as well. Probably a different story with those who are specifically trained as a machinist. If I were to wait for a clear explanation without posting this question I may never know the answer...

What it looks like, how to use it, etc...

From Bill's post I kind of assumed it was some kind of tool you would rub the reamed "throat" of the chamber. I just went to a dictionary...
Click to expand...

Dennis, I was told by someone who has seen Bill do this that he uses a hob in a cordless drill to smooth the leade. Bill said in his post he invented a hob so I guess he was the first and only gunsmith to ever do this. He seems appalled that someone would make a hob and sell it without asking him.
 
Dennis, it is in effect a fitted and lubricated burnisher. Apparantly that steel composition with said lubricant will give a proper combo to smooth both burrs and or tool marks in the chamber cut usually from any of the 416 series steels since it would take an untold # of rounds to shoot it smooth, etc. etc. I've seen 'ol Bill's leades with a borescope and they're pretty damn slick, theoreticlly leading to a nice smooth transition into the bore.
 
It sure sounds like a tricky thing to do... how easy would it be to screw it up?
 
Friend Tim

Friend Tim:

I qoute form you:

tim, Dennis, it is in effect a fitted and lubricated burnisher. Apparantly that steel composition with said lubricant will give a proper combo to smooth both burrs and or tool marks in the chamber cut usually from any of the 416 series steels since it would take an untold # of rounds to shoot it smooth, etc. etc. I've seen 'ol Bill's leades with a borescope and they're pretty damn slick, theoreticlly leading to a nice smooth transition into the bore.

Tim, the hob is what makes my accuracy..........and it's proper use....

Now they're taking it from me...(Tim, what's new)

I hope you are feeling well my friend...

Your friend, Bill Calfee
 
Kathy said:
Friend Tim:

I qoute form you:

tim, Dennis, it is in effect a fitted and lubricated burnisher. Apparantly that steel composition with said lubricant will give a proper combo to smooth both burrs and or tool marks in the chamber cut usually from any of the 416 series steels since it would take an untold # of rounds to shoot it smooth, etc. etc. I've seen 'ol Bill's leades with a borescope and they're pretty damn slick, theoreticlly leading to a nice smooth transition into the bore.

Tim, the hob is what makes my accuracy..........and it's proper use....

Now they're taking it from me...(Tim, what's new)

I hope you are feeling well my friend...

Your friend, Bill Calfee
Click to expand...

Bill,

This gun forum is probably the most sharing forum I have seen...

How about a detailed description of how you make and use this hob...

I doubt you would lose any business over sharing that info as you are swamped with a lifetime of work now...

Dennis
 
Kathy said:
Friend Tim:



Tim, the hob is what makes my accuracy..........and it's proper use....

Now they're taking it from me...(Tim, what's new)

I hope you are feeling well my friend...

Your friend, Bill Calfee
Click to expand...

Hanging in there. Yes I know the what and the why, some are less familiar with the term. I suspect you're not goin into much about the "how".:D
 
Friend Dennis

Friend Dennis:

I quote from you:

Bill,

This gun forum is probably the most sharing forum I have seen...

How about a detailed description of how you make and use this hob...

I doubt you would lose any business over sharing that info as you are swamped with a lifetime of work now...

Dennis

Dennis, I stopped writing for Precision Shooting the first of this year....a great magazine, but my writings contained lots of experiments, requiring lots of machining time, range time etc......I just couldn't afford to keep writing.

Precision Shooting paid me fairly what they could....I have absolutely no complaints and I love the magazine, always will...

But, I still have a bunch of stuff to say concerning accuracy.....

During this past year, as I've had time, I've continued writing for a possible book publication.....These writings are about the way I lap, the way I chamber and of course the use of my hob........and other subjects....and there is even a couple more of my corney adventures when I was a kid.....

Dennis, my hob, or whatever anyone wishes to call it, is a burnishing tool...it can be tricky to use and if not produced of the proper material, and used with the proper lubricant can gall and cause problems.....

If properly used, it assists accuracy.....

I have three more subjects I'm completing, then I'm going to see about a book.

I hope no one is offended if I ask you wait till the book is published to read how I do my work, and how I use my hobs.

Your friend, Bill Calfee
 
Kathy said:
Friend Dennis:

I quote from you:

Bill,

This gun forum is probably the most sharing forum I have seen...

How about a detailed description of how you make and use this hob...

I doubt you would lose any business over sharing that info as you are swamped with a lifetime of work now...

Dennis

Dennis, I stopped writing for Precision Shooting the first of this year....a great magazine, but my writings contained lots of experiments, requiring lots of machining time, range time etc......I just couldn't afford to keep writing.

Precision Shooting paid me fairly what they could....I have absolutely no complaints and I love the magazine, always will...

But, I still have a bunch of stuff to say concerning accuracy.....

During this past year, as I've had time, I've continued writing for a possible book publication.....These writings are about the way I lap, the way I chamber and of course the use of my hob........and other subjects....and there is even a couple more of my corney adventures when I was a kid.....

Dennis, my hob, or whatever anyone wishes to call it, is a burnishing tool...it can be tricky to use and if not produced of the proper material, and used with the proper lubricant can gall and cause problems.....

If properly used, it assists accuracy.....

I have three more subjects I'm completing, then I'm going to see about a book.

I hope no one is offended if I ask you wait till the book is published to read how I do my work, and how I use my hobs.

Your friend, Bill Calfee
Click to expand...

Looking forward to that Bill. I hope it is soon, I think I am as old a you ... :D

Dennis
 
Bill calfee......

Bill, so let me see if I understand this. All the threads you have started the last year that never seem to lead to anywhere are to sell your book? Would that be a fair statement?
 
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