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  1. #1936
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,942

    Default

    When I looked again, after you mentioned it, I did see it was cordless. Eyes are getting a bit old to see quickly and notice things.
    To grow old is mandatory, growing up is optional.

  2. #1937
    Join Date
    Jan 2016
    Location
    Wodonga Vic
    Age
    38
    Posts
    633

    Default Mitre Clamp

    I completed this mitre clamp at TAFE today, it was a fun little project and I'm happy with how it turned out.


    DSC_0086.jpg

    Ben

  3. #1938
    Join Date
    Nov 2010
    Location
    Gippsland Victoria
    Posts
    733

    Default

    Quote Originally Posted by jack620 View Post
    I finally made a hollow-tipped screwdriver for tightening the nuts that secure the handles on the Hercus cross-slide and compound. They work loose very easily resulting in a huge amount of backlash.
    Terrific idea Jack,

    I cut a washer in half and use the cut diameter as a screwdriver then lose it and then cut another washer in half and then every now and then find these stray half washers in odd corners.

    That hollow point screwdriver is great - wont easily lose it. Thankyou.

    Bill

  4. #1939
    Join Date
    Nov 2007
    Location
    melbourne australia
    Posts
    3,228

    Default

    Thanks Bill, but I have to admit it's a copy of the one Mal at Australian Metalworking Hobbyist normally sells. He was out of stock and I'm impatient. Your latest project
    Chris

  5. #1940
    Join Date
    Nov 2010
    Location
    Gippsland Victoria
    Posts
    733

    Default Having a go at a QCTP

    Attempting a qctp - based on article in recent Model Engineers Workshop.

    A bit messy, will learn as much as I can on this one, and and then do it again, hopefully better.

    - Hacksaw made a better cut than bandsaw on the diagonal slit - however it can get a bit tedious and tiring on the arms.

    Have gathered several plans for different varieties of qctp - after messing around with the dovetail today I reckon the easiest version is the fat round post with the drilled out rectangular toolholders. Google "Norman QCTP" and you will see a heap like this ....

    https://www.flickr.com/photos/14984051@N07/2620080890


    Not too different from what came with the 9" Hercus - maybe the easiest of all is just to make a few more toolholders for the original Hercus toolpost ?

    Anyway was curious enough to have a go and bought an el cheapo dovetail cutter to cut the mild steel.

    Bill



    Attached Images Attached Images

  6. #1941
    Join Date
    Nov 2010
    Location
    Gippsland Victoria
    Posts
    733

    Default Chuffed - QCTP works fine

    Got the qctp up and running today.

    ............... and as an added bonus I finally got a decent finish from a round nose hss finishing tool - dont know why but that has eluded me for 3 years - I generally use a shear tool or a knife tool turned around to almost rub along the workpiece.

    Next job - figure out a workflow to efficiently cut a few more toolholders, and see if I can grind a hss flycutter to rough out the dovetails.
    Have seen posts of people using their boring heads as flycutters

    See photos 16 to 19 on this page Mini-Maschinen brauchen Mini-Werkzeuge

    Alternately is there anywhere I can buy one or two 60 degree inserts instead of a whole packet of 10 for $50ish ? Then I could make one of those very simple "insert flycutters" for dovetails.

    Bill
    Attached Images Attached Images
    Last edited by steamingbill; 11th Sep 2017 at 08:20 PM. Reason: added photos and weblink

  7. #1942
    Join Date
    Jul 2016
    Location
    Melbourne
    Age
    35
    Posts
    1,522

    Default

    Hi Bill i have loads of assorted 60 degree inserts send me a pm with your address and ill send 5 or 6 out.

  8. #1943
    Join Date
    Jul 2006
    Location
    Athelstone, SA 5076
    Posts
    4,255

    Default

    Quote Originally Posted by steamingbill View Post
    Alternately is there anywhere I can buy one or two 60 degree inserts instead of a whole packet of 10 for $50ish ? Then I could make one of those very simple "insert flycutters" for dovetails.

    Bill
    I bought some of these when I did the dovetail on my 1st knurler

    https://www.aliexpress.com/w/wholesa...il-cutter.html


    I

  9. #1944
    Join Date
    Jan 2011
    Location
    Far West Wimmera
    Age
    63
    Posts
    4,049

    Default

    Quote Originally Posted by caskwarrior View Post
    Hi Bill i have loads of assorted 60 degree inserts send me a pm with your address and ill send 5 or 6 out.
    Ideally, from what I have read you will need 15 degree clearance angle (TD??) or you might manage with 11 degree (TP??). This is why I have not made one of these yet. I have not been able to find a suitable insert. The clearance angle will depend on the cutter diameter, but the smaller the diameter the greater the angle that is required.

    Dean

  10. #1945
    Join Date
    Jul 2008
    Location
    near Warragul, Victoria
    Posts
    3,718

    Default

    Quote Originally Posted by steamingbill View Post
    Got the qctp up and running today.

    ............... and as an added bonus I finally got a decent finish from a round nose hss finishing tool - dont know why but that has eluded me for 3 years - I generally use a shear tool or a knife tool turned around to almost rub along the workpiece.

    Next job - figure out a workflow to efficiently cut a few more toolholders, and see if I can grind a hss flycutter to rough out the dovetails.
    Have seen posts of people using their boring heads as flycutters

    See photos 16 to 19 on this page Mini-Maschinen brauchen Mini-Werkzeuge

    Alternately is there anywhere I can buy one or two 60 degree inserts instead of a whole packet of 10 for $50ish ? Then I could make one of those very simple "insert flycutters" for dovetails.

    Bill
    Bill, place your hand on the headstock while the spindle is turning and feel for vibrations. The finish is to a large degree determined by the minute vibrations in the headstock, I place a glass of water on the headstock and watch the wave patterns as a guide . There are RPM's where the vibrations will increase / decrease , something to do with harmonics ! Good Luck

  11. #1946
    Join Date
    Jun 2007
    Location
    Vic
    Age
    48
    Posts
    544

    Default

    Lots of drilling and tapping on this 20mm thick plate today.

    20170916_115514.jpg

  12. #1947
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,942

    Default

    Looks an interesting project, what's it going to be when it's finished?
    To grow old is mandatory, growing up is optional.

  13. #1948
    Join Date
    Jun 2007
    Location
    Vic
    Age
    48
    Posts
    544

    Default

    That is it Kryn, It just makes it easier to clamp the part you want to machine on the rotary table and it leaves a gap below and I don't have to worry about damaging the table.

    20170916_214039.jpg 20170916_215123.jpg 20170916_220153.jpg

  14. #1949
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    71
    Posts
    5,942

    Default

    Thanks for that Trong, a real handy item to have around, certainly saves the R/T. Do you mind if I copy it later.
    How did you go with the anchor rollers?
    Kryn
    To grow old is mandatory, growing up is optional.

  15. #1950
    Join Date
    Jun 2007
    Location
    Vic
    Age
    48
    Posts
    544

    Default

    There is no patent on that Kryn. No further progress on the anchor roller since but the bars above is for the anchor coupling, that is to keep the rope stay on the front roller. I will do them all at once.

    Regards,
    Trong

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