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Original Message
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RE: Interesting! |
By giacamo - 12/08/2005 7:36:55 PM; IP 205.161.194.4 |
hay" some blocks are harder to bore, many things can change it,s hardness i,v sean them same numbers eazy to bore and hard to bore.i cheary pick my blocks on casting slag bildup most ruff looking cast means a cold mix cold,or cold mold ,and i look at finish machine work from the factury,ive found out the later bolcks in the 70,s normly look better my 2 cents...... |
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