What Material for Abene VHF-3 Feed Stop
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  1. #1
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    Default What Material for Abene VHF-3 Feed Stop

    My machine is missing one of the feed stops, circled in image taken from Abene website. I have the other one already for dimensions. You can't cut it with a file and it seems to be black oxide coated.

    Question is: What material would you use to make one? Yes a new one is available but it is ~75 euro plus bank draft shipping etc puts it over $200 by the time it gets here. Plus it would be fun to make one using my Abene.

    I have access to a small heat treat oven as well for hardening but no access to a surface grinder.

    Thanks,

    feed-stop.jpg

  2. #2
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    Original part is most likely made form a steel that accepts case hardening (SAE 8620....) And that part is likely carburized to offset wear.
    Personally i would make this part form "pre-hard" 4140 and use it as delivered form the supplier (no post heat treatment). As supplied heat treated 4140/4142 will run about 30 RCh.
    Machines well with good finishes using carbide tooling.....

    Could also make it from O1, and through harden it....
    Cheers Ross

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    I would make the body and tongue that fits in the groove out of mild steel so that if you have a wreck, the stop deforms instead of the machine. You could case-harden the bumper or insert a hard piece into the body somehow.

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    For what it's worth, not that it's correct or anything, my VHF-3 was also missing some stops, made my own out of 4140 (not pre-hard). Considering I average the use of this machine to about twice a year, I'm not worried about it. I also made 2 new handles for it. Was missing the post and knob entirely on the X- side, and the knob only on the Y handle.

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    Quote Originally Posted by rklopp View Post
    I would make the body and tongue that fits in the groove out of mild steel so that if you have a wreck, the stop deforms instead of the machine. You could case-harden the bumper or insert a hard piece into the body somehow.
    Not sure under what conditions you could "crash" the trip stops....

    Cheers Ross

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  8. #6
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    I'll try and find some 4140 PH and make one. The travel stops stop the crash I think and I also use this thing like a couple times per year so they son't wear out. It is just nice to make things 'right' and have a complete machine.
    Chris


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