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Join Date:

01-19-2016

Last Activity:

09-20-2017 2:01 PM

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  • Posted in thread: Quarter Scale Merlin V-12 on 08-03-2017 at 03:33 PM
    That is exactly the reason why a coolant system is pressurised nowadays . To raise the boiling
    temp and thus avoid the flash steam problem . I just did an engine rebuild , and long story
    short , I had...

  • Posted in thread: Arduino based CNC on 06-14-2017 at 05:19 PM
    I think when you go the arduino route , it's best to avoid those little stepper drivers that
    plug into the mainboard . I don't have any experiance with those particular drivers , but if I
    compare any ...

  • Posted in thread: Open sand mould or not on 06-04-2017 at 05:55 PM
    This the one that went wrong . Half an I beam :)Lesson learned , at least 10mm of sand between
    the flask walls and the pattern .

  • Posted in thread: Open sand mould or not on 06-04-2017 at 05:33 PM
    Another day , another casting . I wanted to try a split pattern for some time now . So I made a
    simple two piece pattern out of mdf . It's supposed to be a kind of I beam shaped part , but
    with a flan...

  • Posted in thread: Watts linkage ratios? on 06-02-2017 at 03:39 PM
    how about a paucellier-lipkin linkage instead .
    https://en.wikipedia.org/wiki/Peaucellier%E2%80%93Lipkin_linkageDon't know if it was ever used
    , but it does offer true straight line motion . Just a th...

  • Posted in thread: CCGT inserts on 05-24-2017 at 11:06 AM
    I didn't know there are round inserts for aluminium . Would make a great flycutter indeed .
    I've been thinking about building a flycutter holder that would use the the ccgt insert , but
    rotated 90 , ...

  • Posted in thread: Quarter Scale Merlin V-12 on 05-24-2017 at 09:43 AM
    I designed it around a sizable chunk of aluminum in my scrap collection . - TerryQuite a piece
    of scrap that is :)

  • Posted in thread: CCGT inserts on 05-24-2017 at 07:12 AM
    Some of the wel known chinese suppliers sell these CCGT in boxes of 10 for abt 13$ . And a set
    of 4 different holders with 10 CCMT0903 inserts goes for 22$ . S&h included . That makes 4
    holders and 20...

  • Posted in thread: A DIY bandsaw for the shop ! on 05-23-2017 at 05:56 AM
    I had this one in my "drawer of projects I'll do someday "Great to see that someone build it ,
    and that it's orking as it should . Nice job Pat

  • Posted in thread: CCGT inserts on 05-22-2017 at 11:40 AM
    Let me start by saying I'm not an insert guy . I like my hss tools , I like to grind them , and
    I 'm the proud owner of a clarkson MKIII t&c grinder . Never needed inserts , and hardly use
    them . That...

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