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Hey everybody! Gang fight on the: " 5-C Angle?" thread!

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  • Timleech
    replied
    <font face="Verdana, Arial" size="2">Originally posted by John Stevenson:

    5C advantages:-
    **************
    Cheap
    Plentyfull
    Available in square and hex.
    Accurate to a size
    Can be drawtube or front closed
    Will pass long lengths
    Can take 1" thru or 1-1/8" blind

    Sir John.[/B]</font>
    I'll add:-
    Emergency collets readily available, including extended nose & pot type, great for gripping threads, washers etc.

    Drawtube closure means you can machine right up to the collet face.

    As you said, the limited range of each collet is often a real pain.

    <font face="Verdana, Arial" size="2">Originally posted by John Stevenson:


    ER32 Advantages:-
    *****************
    Workholding AND toolholding making better use of expensive equipment.
    Only one set needed for imperial or metric.
    No gaps from 0.080" to 3/4" + and don't go bellmouthed.
    Will take long lengths with front closer nut.
    Will take a backstop on milling chucks to stop the tool sliding back and for repeatability.
    Can be made to fit smaller spindles.

    ER32 Disadvantages:-
    Square and hex only just coming thru.
    Less capacity than 5C, 3/4" + against 1"
    Won't hold pot chucks

    Feel free to add to the lists.

    Sir John.
    </font>
    I've never seen backstops for ER32, (how does that work, or is it a DIY thing?) but they're standard for 5C with internal threads.
    The nut on the front of ER chucks can be a pain.
    You can't (yet) get stuff like this in ER, or if you can it'll be silly money:

    http://web.onetel.com/~duttondock/Pictures/Habit5C.jpg

    I know, your spin indexer with a cheap XY table & a house brick is *almost* as good
    The tailstock is irrelevant to the job that's in it, I just put it on for the pic, and of course it doesn't need anything that fancy for the job either, which is just a lap for a safety valve seat.

    I count myself lucky to have both, started with an ER32 set for my first mill, no thought of using it for workholding, then bought a lathe with 5C kit, later found other gear which makes use of the 5C collets.

    I agree starting from scratch on a tight budget ER32 has more to offer overall.
    I don't know why ER40 isn't as popular, that'll hold over an inch dia.

    Tim

    Leave a comment:


  • Your Old Dog
    replied
    Yea you are right, I should have checked the dates out. But, I heard what sounded like the Battle of the Titans rumbling thru the forum and peeked in to see what looked like blood all over the place!

    Big John, it ain't likely to ever matter to me which is better! I'm too cheap to buy anything that it might make a differance in. I'm actually half Scotch and don't want to let Norman and some others down by squandering my hard earned cash (squid to you UK types!)

    I'll be running along now, back to the 5c thread to see who's still standing

    Leave a comment:


  • Allan Waterfall
    replied
    <font face="Verdana, Arial" size="2">Originally posted by John Stevenson:

    ER32 Disadvantages:-
    Square and hex only just coming thru.

    Sir John.
    </font>
    Oops,I'd better not put any more hexagon bar in my ER collets then.

    Sorry Sir John,but I'm only a lowly knave.

    Allan

    Leave a comment:


  • John Stevenson
    replied
    YODA,
    'Tis not a fight but a 'discussion'.
    No winners or losers just people with different views.

    If you are 169 years old with a shed load of 5C collets and don't use your equipment then no one is going to change your mind.

    If you are just starting out in the job, need to obtain collets than it pays to at least see what's out there instead of following the herd, then make a decision

    5C advantages:-
    **************
    Cheap
    Plentyfull
    Available in square and hex.
    Accurate to a size
    Can be drawtube or front closed
    Will pass long lengths
    Can take 1" thru or 1-1/8" blind

    5C disadvantages
    *****************
    Workholding only
    Only accurate or able to hold +/-0.005" to a given size.
    Bulky and won't fit smaller machines.
    Many needed to cover a set.
    Needs to be duplicated for metric.

    ER32 Advantages:-
    *****************
    Workholding AND toolholding making better use of expensive equipment.
    Only one set needed for imperial or metric.
    No gaps from 0.080" to 3/4" + and don't go bellmouthed.
    Will take long lengths with front closer nut.
    Will take a backstop on milling chucks to stop the tool sliding back and for repeatability.
    Can be made to fit smaller spindles.

    ER32 Disadvantages:-
    Square and hex only just coming thru.
    Less capacity than 5C, 3/4" + against 1"
    Won't hold pot chucks

    Feel free to add to the lists.

    Sir John.

    Leave a comment:


  • J Tiers
    replied
    Yah..... wotever

    Last year's news..... read the dates

    Leave a comment:


  • Hey everybody! Gang fight on the: " 5-C Angle?" thread!

    Don't jump in too soon to you see who's gonna win!

    Jump overthere and watch the big dogs duke it out Even some pups weighing in!

    [This message has been edited by Your Old Dog (edited 10-13-2005).]
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