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Jan Ysselstein

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Jan Ysselstein last won the day on March 23 2017

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    west coast of usa ( USACAstan )
  • Interests
    shaping and making of steel and iron

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  1. Thank you all ....I was under the impression there was a function called " manage attachments " ..I think this may have been so on a previous version. Sometimes I find I have posted information no longer valid or a photo that was associated with another post.
  2. Please assist me in figuring out hoe to manage my attachments...thank you.
  3. TRuGrit sells silicon carbide belts made to run wet...check with the glass companies they always grind wet with belts. Do as much as you can with 4.5" grinders you will be surprised.
  4. Thanks for the rep lies guys...I like the idea of quenching quickly past the nose..my tendency to fumble makes me want to stay with tempering.
  5. Normally I straighten blades after tempering...I just read an instruction by a blade smith suggesting the blade is easy to straighten just after a differential quench to about 450 F ( quench oil temperature at 450 F and a clayed spine and back of the blade...W-2, 203- E damascus . Doe anyone here use that type of a process?)
  6. Thanks Alan......A very interesting article .....C. Ritter von Schwartz once described a similar process ..I am guessing at the exact wording because I cannot find his quote. Steel was made by adding magnetic sand, some laterite and a bit of charcoal into a crucible and heating it. To most of us familiar with iron and steel that description makes no sense....if the magnetic sand was not magnetite but granulated cast iron the statement would make complete sense and it would be very similar to the method suggested in the article. I have tied to search to see if the term magnetic sand may have been used to describe granulated cast iron. The closest I came was Iron Sand = Cast iron . I think it is quite possible C.R.von Schwartz did have it right and there was confusion of terms. I have done an experiment along these lines and experienced a crucible failure late in the melt...to do this again I would fire the crucible for about 1 hr. before using it..this mix will attack an unfired crucible very quickly.
  7. Thanks Joshua.. This topic provides me a lot of pleasure . I see the making of a steel , like the ones most admired in history...as a challenge . If we look at all the steps involved...crucible making , crucible performance, alloy selection...making the iron from ore....melting/cooling practice...forging method...heat treating for max strength and appearance...polishing and etching.. I have done this long enough to have a little bit of experience in all the topics. I am in no hurry but am anxious to get some good results. I have just bought a heat treating furnace and have figured out how to run my gas forge at a low temperatures... Things are coming together...there was a guy Dmytri who used to post here and told me ( a new comer ) it would take a long time before a person can make a good crucible steel....he was sooo correct...I shrugged it off as I had more attitude than skill. For me it is important the challenge is there and remains there. Weaving in what I learn about metallurgy with the historical accounts and what Verhoeven and some of the other modern experts are putting out there is exiting. The intelligence of those that came to this activity before us astonishes me.
  8. The two large dendrite pictures just above do not belong to the cut ingot..the dendrite pictures belong to a half an ingot I hope to forge tomorrow. The cut ingot forged quite well , both halves have a very strong dendritic appearance. If I can drag some pictures into this post I will. We are at about 3/8 inches thick, cementite is gathering at the proper place and I will forge to a very flat sheet. The pictures show cementite gathering but the dendrites still recognizable are white...because they are mostly ferrite and will not show any color until later. The screens here and of the large dendrites are 7mm wide. Tomorrow I will forge some odds and ends ( fragments saved from failed runs ) caused by crucible failures.
  9. Near the end of page 6 off this thread are two ingots cut in half...I just found them while cleaning up around my charcoal forge. These slices are pretty rough and will be forged only to test the forging sequence I am practicing for a couple of really good ingots ( I will show them when I forge them ) . Here is a picture of the inner surface of one of the slices as we proceed to start forging....the dark areas will be bright and the lighter areas will become dark ( black I hope )
  10. Thank you for posting it.....I am looking forward to reading about it.
  11. Experimenting with crucible steel is very time consuming and expensive...progress tends to be slow...I totally understand your thinking. Jan
  12. I have some 4" thick 20" by 48" steel plates I would part with...these are former press platens and should be 4140...I have not have them tested. My 50 sits on 1 and I have another soon to operate 50 sitting on another.
  13. James...I was there a year or two ago and I panicked ...the regular displays of wootz ( damascus ) blades are way above your line of sight and the room is dark. I got so desperate I robbed some toys they had for sale and improvised a light ..but could not find a ladder. Please post your impression when you come back it may have changed. There are a couple of very nice Japanese blades there and other than the disrespect for wootz it is a great museum.....The Turkish Room in Dresden is also recommended ...but here though some very nice blades are at eye level ( behind glass ). The Turkish Room has some amazing metal work aside from steel. I was constantly harassed by the security guys for getting the glass dirty. Bring your own light source to all these places and a large single magnifier as well ...they often can magnify details at 2 ft way or so.
  14. Now we have chased some of the cementite to the area containing the micro alloys ...we still have a long way to go as the photo shows a lot of cementite still in the areas that are converting to pearlite. I have what i need from this post and consider it finished....now to some new ingots. I may post a photo if I get back to working with this sample.
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