Thread: Touch Probe

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  1. #1
    after reading a posting on steel framed router with regards to a 3D probe
    I was curious to see one working and found this rather good site but is there any better out there and who? makes them and sells them
    http://www.indoor.flyer.co.uk/probe.htm

    I been on wildhorse innovations but $115.00 seams a bit steep ??

    Has any one on this web site made one yet and how well dose it work ???
    James

  2. #2
    how hard would it be to make a home switch like this one seen on you tube ??

    http://www.youtube.com/watch?v=Ku1RU...eature=related

    James

  3. #3
    Quote Originally Posted by luke11cnc View Post
    after reading a posting on steel framed router with regards to a 3D probe
    I was curious to see one working and found this rather good site but is there any better out there and who? makes them and sells them
    http://www.indoor.flyer.co.uk/probe.htm

    I been on wildhorse innovations but $115.00 seams a bit steep ??

    Has any one on this web site made one yet and how well dose it work ???
    James
    There are many plans out there and im sure people on here have made them, they are a simple device but are very very usefull, why dont you make one as your first project when you have finished building, if you get stuck for plans PM me and i will design one for you to build...
    Always bear in mind that your own resolution to succeed is more important than any other - Abe Lincoln

  4. #4
    Quote Originally Posted by luke11cnc View Post
    how hard would it be to make a home switch like this one seen on you tube ??

    http://www.youtube.com/watch?v=Ku1RU...eature=related

    James

    Here is how mine is designed and built...

    http://www.youtube.com/watch?v=aYunX1KHX3c&NR=1

    That is the basic design.. Simplzzzz
    Always bear in mind that your own resolution to succeed is more important than any other - Abe Lincoln

  5. #5
    Quote Originally Posted by chip View Post
    theres one here a bit cheaper.looks like a peice of .... but if it works http://www.ebay.co.uk/itm/2905997600...84.m1423.l2649
    i aim to get one at some point(not the above) but i,ll need an A is for apple type tutorial to work it :lol: are there any tutorials for a begginer?
    This is where i got my inspiration. If you do make one then do a blog on here for it wont you..

    http://fadedbits.com/2011/02/touchprobe/
    Always bear in mind that your own resolution to succeed is more important than any other - Abe Lincoln

  6. #6
    Quote Originally Posted by chip View Post
    theres one here a bit cheaper.looks like a peice of .... but if it works http://www.ebay.co.uk/itm/2905997600...84.m1423.l2649
    Looks expensive for what it is - not even got a proper stylus. I'll make one when I get round to it... might make a few if they go for that much :idea:

    Quote Originally Posted by chip View Post
    i aim to get one at some point(not the above) but i,ll need an A is for apple type tutorial to work it :lol: are there any tutorials for a begginer?
    I'm sure we'd work it out soon enough. You'll want to probe the edges of the part first so that you only need to the height probing over the extent. Otherwise you waste hours probing the bed.

  7. #7
    Quote Originally Posted by Jonathan View Post
    You'll want to probe the edges of the part first so that you only need to the height probing over the extent. Otherwise you waste hours probing the bed.
    My freebie probing software project for Mach might be of interest. http://www.razordance.co.uk/probe25D.htm. The probe I made when I first wrote the software took me about half an hour to make - it was pretty crappy but surprisingly accurate.

    Andre did some better vids than mine. You can see them via this link http://www.machsupport.com/forum/ind....html#msg97649

    Cheers

    Ian
    Last edited by stirling; 04-09-2011 at 08:26 AM.

  8. #8
    Quote Originally Posted by stirling View Post
    My freebie probing software project for Mach might be of interest. http://www.razordance.co.uk/probe25D.htm
    I read that a few weeks ago but couldn't find the link ... thanks. It looks like a good idea, the only problem I can see is if the height of the edge of the part you are probing varies significantly it's not accurate.

  9. #9
    Quote Originally Posted by Jonathan View Post
    the only problem I can see is if the height of the edge of the part you are probing varies significantly it's not accurate.
    Not accurate my be a poor choice of words - it's as accurate as your system in that it'll give you the edge at the height you probe. Sure, some shapes may not lend themselves to this process as well as others - welcome to the art of probing and every 3D analysis system there is, whether it be laser, contact or even MRI. None can cope with every shape and material. Like everything else, you mix and match and choose the right tool for the job.
    Last edited by stirling; 04-09-2011 at 10:56 AM.

  10. #10
    Quote Originally Posted by stirling View Post
    Not accurate my be a poor choice of words
    Probably, I was never very good in English lessons...

    I guess all you have to do is change the probe tip to a simple cylinder that's at least as long as the height of the piece. The only issue is as the cylinder pivots about the top it will give a slightly different reading depending on the height. Easily compensated for by just drawing a contour round the path generated (or using a much longer cylinder) and accepting it may probe a little of the bed.

    Alternatively you could probe the edge at different heights then generate the path from the limits of those, but that's going to take a while.

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