[TheForge] Re: Anvils
Peter Fels And Phoebe Palmer
[email protected]
Wed Apr 2 22:14:02 2003
Thanks for the pertinent advice Dan and Clay. I sure agree, yup....But
just because one knows stuff ...it doesn't turn out that one
necessarily does it. Hope you aren't too dissapointed...I know i was.
On the same hand, It has been my policy to ernestly try to always hit
the same thumb, given the choice. Because i miss a lot, i seem to have
hit the top knuckle of my left index finger a lot of times, missing the
thumb. But, the advantage of that turns out to be that , now that i've
broken it, it doesn't hurt much. See, there's a bright side to
everything!......Pete
Dan Tull wrote:
>"Only put under the hammer those fingers you would be willing to lose."
>
>Clay Spencer
>
>dan tull
>georgia
>abba, afc, S.C. psba, obg,sofa
>----- Original Message -----
>From: "Peter Fels And Phoebe Palmer" <[email protected]>
>To: <[email protected]>
>Sent: Wednesday, April 02, 2003 2:52 AM
>Subject: Re: [TheForge] Re: Anvils
>
>
>
>
>>Chuck;
>>Didn't know Clay Spencert existed when i built mine...plans? What are
>>those? Materials lying around the yard determined a lot of the design.
>>Yes, I did build in a rebound spring which works well.
>>While i use sacrifice plates on the TH anvil sometimes, I find that they
>>do absorb a lot of energy compared to welded solid faces. I do have a
>>pretty massive anvil on it now ( 7"X9"X 45" solid built up welded
>>plates set on edge). but with the hammer weighing in at almost 100# I
>>don't have a 10-1 ratio, i don't think.
>>It was enough to do a fair job of breaking my index finger yesterday,
>>however. I'd advise you to avoid that.
>>Did a much better job of it last time...see
>>http://www.peterfels.com/bsab.htm
>>Oops...digression...anyway....the only way I can see to heat treat it is
>>to flame harden it, which I don't know diddle about.
>>No, you can't borrow my Schmirler!
>>Thanks for your commentary.......Pete
>>
>>Chuck Robinson wrote:
>>
>>
>>
>>>Pete,
>>>Did you make the TH faces removable like Clay Spencer shows in his Plans?
>>>I would suggest that you do so ,
>>>Spark test the Grader Blade then use a proper heat treatment for the
>>>
>>>
>alloy.
>
>
>>>With an unknown steel, test quench in slow to fast quenches until the
>>>
>>>
>proper
>
>
>>>hardness is achieved.
>>>first air quench, next oil quench,next interrupted water quench, next
>>>
>>>
>water
>
>
>>>quench, finally GSQ quench.
>>>The die movement in TH dies isn't too detrimental in blow force as long
>>>
>>>
>as
>
>
>>>you have at least a 10 to 1 ratio of anvil to hammer weight.
>>>If you need to use the hammer for multiple blows, add rebound springs
>>>
>>>
>like
>
>
>>>Otto Schmirler shows on PP 99-100 in his book "WERK UND WERKZEUG DES
>>>KUNDERSCHMIEDS"; and shame on you folks if you don't own a copy of it.
>>>
>>>Ralph,
>>>I've found that the vibrational harmonics (hammer rebound) of an anvil
>>>
>>>
>are
>
>
>>>far more dependent on the anvil mass and homogeneity of that mass than
>>>
>>>
>the
>
>
>>>face hardness (as long as the face isn't dinged by the hammer blow).
>>>
>>>
>After
>
>
>>>testing a lot of anvils with the ball bearing drop test and Rockwell
>>>
>>>
>files,
>
>
>>>I wasn't able to conclude that the hardfaced anvils were routinely better
>>>
>>>
>in
>
>
>>>rebound.
>>>Incidentally hammer ring didn't tend to correlate to liveliness either.
>>>Some excellent cast steel anvils, like my Kohlswa, have excellent
>>>
>>>
>rebound, a
>
>
>>>relatively soft face and minimal. hammer ring.
>>>Laurel Machine and foundry also sells excellent cast anvils, but they
>>>
>>>
>went
>
>
>>>thru several casting foundries before they found one with enough
>>>
>>>
>expertise
>
>
>>>and quality control to insure consistent reliable quality in the
>>>
>>>
>castings.
>
>
>>>Frosty,
>>>My top alloy choices for a cast anvil are: 1 spent Uranium, 2 Titanium
>>>
>>>
>and
>
>
>>>3 tungsten. I'd like one of each.
>>>Chuck
>>>----- Original Message -----
>>>From: "Peter Fels And Phoebe Palmer" <[email protected]>
>>>To: <[email protected]>
>>>Sent: Sunday, March 30, 2003 11:29 PM
>>>Subject: Re: [TheForge] Chasing and engraving
>>>
>>>
>>>
>>>
>>>
>>>
>>>>Phlip;
>>>>Pure iron if you can get it, if not try for a low carbon or deep draw
>>>>type steel.
>>>>If you make your chasing tools from something like S7, then you can use
>>>>them for hot work too.
>>>>A set of curved line( ends in various arcs) tools are good, make them
>>>>both sharp ( for cutting) and blunt for creasers.
>>>>The cutting edges last longer if ground with convex curves ( the
>>>>opposite of hollow ground.) Also radius the edges of lining or cutting
>>>>tools so you can rock them along a line and not leave jags.
>>>>Rounds, elipsys(sp), diamods and squares...both radius edged and sharp
>>>>edged.
>>>>Keep your eye out for "found " chasing tools..like small rivet sets,
>>>>nail sets. old time push rods and so on.
>>>>Making the silly little things is kinda addictive..if you lean that way.
>>>>George Dixon has written about this subject well.
>>>>Norm Larson has a pretty good new book on the subject ( forgot the title
>>>>already, tisk).
>>>>Use a soft hammer ..you will spend less time hunting for flying tools.
>>>>
>>>>Chuck;
>>>>I used scraper blade for the anvil and hammer faces on my treadle
>>>>hammer. The welding involved in making the faces solid enough to suit (
>>>>lots) softened the scraper blade much more than I'd like.. except for a
>>>>few areas that didn't get as hot. I hammer out the dings from time to
>>>>time...similar to the areas adjacent to the welded repairs on my anvil.
>>>>Work hardening (I started with a small air hammer) didn't achieve as
>>>>much as I'd hoped.
>>>>There are often times when I heat an area to work and leave the part
>>>>that bears on the anvil, cold, so as to localize distortion. If it is
>>>>tool steel, it is hard ( literally) on the anvil's soft spots.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>_______________________________________________
>>>http://mailman.qth.net/mailman/listinfo/theforge
>>>theforge mail list group photo site is
>>>http://www.photoaccess.com
>>>Login: [email protected]
>>>password: anvil
>>>___________
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>>password: anvil
>>___________
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>
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>_______________________________________________
>http://mailman.qth.net/mailman/listinfo/theforge
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>password: anvil
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