Page 3 of 4 FirstFirst 1234 LastLast
Results 51 to 75 of 92

Thread: Thickness calipers

  1. #51
    aka "Hydrilla" Darren Kern's Avatar
    Join Date
    Oct 2004
    Location
    Gibsonville, NC
    Posts
    936

    Default

    Yeah, that helps, thanks. My first one I just put a heavy duty wood screw through the loop hole in the back and into the end of the wood, and even with it screwed in tight, the gauge pivoted easily.
    My original IV mandolin kit blog- http://makingamandolin.blogspot.com/

  2. #52
    Registered User
    Join Date
    Apr 2004
    Location
    bakersfield, ca
    Posts
    437

    Default

    Okay guys, I just cut a square notch large enough to accomodate the mounting hole that is at the top of the machinists gauge then mounted the gauge with a round head machine screw. Most wood screws have a tapered head and won't give you a positive bite on the mounting flange when tightened. I used 3/4" plywood for the caliper so there is enough thickness to mount the screw after drilling a pilot hole. To give the gauge a little more stability so it fits tightly I mounted a garden hose washer on the back side of it by fitting it over the mounting flange before installing the mounting screw. It's really a pretty simple setup.

  3. #53
    Registered User
    Join Date
    Aug 2004
    Location
    Boston West
    Posts
    528

    Default

    I join the many who have bought IV Kits and built a thickness measuring device. In building this tool I suspected I'd have a problem fitting the top with its ribs already attached into the measeuring position and decided to build one that swings open. The key part was a spring loaded screen door hinge that is not very visible in the two pics. So far it works very well and yields results within a couple of thousandths of my good caliper. Well within the nearest 1/64" generally regarded (I think)as the Luthier's standard.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	thicknessgaugeclosed.jpg 
Views:	300 
Size:	108.5 KB 
ID:	15136  

  4. #54
    Registered User
    Join Date
    Aug 2004
    Location
    Boston West
    Posts
    528

    Default

    Here it the open view.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	thicknessgaugeopen.jpg 
Views:	244 
Size:	108.6 KB 
ID:	15137  

  5. #55
    Registered User
    Join Date
    Jun 2003
    Location
    Portsmouth,Ohio
    Posts
    1,021

    Default

    Hey Newt.
    At first glance it looked like a screwy idea,but now I see some real advantages to your design. Mainly,it solves the aggravating problem of having to pull up on the little topnot in order to slide the plate in. That,in addition to easy admission of a mounted top makes this look like a worthwhile project. Good thinkin',my man.
    Jim

  6. #56
    Registered User
    Join Date
    Aug 2004
    Location
    Boston West
    Posts
    528

    Default

    Jim, Thanks for your vote of confidence. I just happened to find a spring loaded door hinge in my junque box and quickly recognized this is what I needed to minimize the mechanical slop in the pivot shaft. In a test of about 50 openings and closings it faithfully returned to the same dial indication plus or minus .001", so I too have confidence.

  7. #57
    Registered User
    Join Date
    Jan 2006
    Location
    Jordanstown, Northern Ireland
    Posts
    409

    Default

    Just bought a gauge in my local independant toolstore. Cost a good bit more than $6.99, but it's still a heap cheaper than stewmac's offering.....
    Quote Originally Posted by stout1
    Now, thanks to Martin and his guitar shaped mandola, I have been stricken with GBMAS, guitar body mandola acqusition syndrome
    hey!! I got my own Syndrome!!!!

  8. #58
    Registered User Yonkle's Avatar
    Join Date
    Sep 2003
    Location
    Boise Idaho USA
    Posts
    968

    Default

    CRAIG W. #I really like the high figure plywood you used, is that a (1) piece caliper? #Looks like you used a French Polish Finish too. Great work, really has some good "mojo" to it, some real "eye candy!" if you will!



    Shalom,Yonkle (JD)

  9. #59
    Registered User
    Join Date
    Sep 2003
    Location
    Riverside, Ca
    Posts
    8

    Default

    Here is a digital version I stumbled on at Harbor Freight site. http://www.harborfreight.com/cpi/cta...emnumber=93295
    I haven't made mine yet but all of your ideas look right on. I'm wondering about a release arm to bring the cal. shaft up. It doesn't seem to be too complex??
    Jim Wright

  10. #60
    Registered User
    Join Date
    Apr 2004
    Location
    bakersfield, ca
    Posts
    437

    Default

    JD - Thanks for the kind words. They are actually pretty utilitarian. The birch plywood is just from an "off the shelf" handyboard from Home Depot. The vertical or "caliper" section is one piece and the finish is some left over Deft from my furniture repair/refinish days. I still have three sets of calipers including guages that I blanked out but haven't yet assembled or finished. One already has someone's name on it but the other two could find good homes for about $60 and shipping if anyone is interested.

  11. #61
    Registered User buddyellis's Avatar
    Join Date
    Mar 2006
    Location
    Lakewood, CO
    Posts
    1,062

    Default

    They are on sale again for $7.99 + 6.99 shipping.

    http://www.harborfreight.com/cpi/cta...Itemnumber=623

  12. #62
    Registered User
    Join Date
    Sep 2002
    Location
    Conway, Ar
    Posts
    39

    Default

    Here's my attempt. Thrown together from what was handy, two piano keys and a couple of pieces from the scrap bin. Really like the digital calipers. Had just a metal scale originally, like some of the others, but this saves me lots of time squinting and second guessing. ...Just hope the missus don't notice the keys missing off'n her piano. :-)
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	digitalCaliper3.jpg 
Views:	273 
Size:	66.0 KB 
ID:	15570  

  13. #63
    Registered User
    Join Date
    Jul 2005
    Location
    UK
    Posts
    126

    Default

    Here's my little gauge
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	gauge.jpg 
Views:	247 
Size:	6.2 KB 
ID:	15573  
    Neil

  14. #64
    Violins and Mandolins Stephanie Reiser's Avatar
    Join Date
    Jun 2004
    Location
    St. Albans, Maine
    Posts
    1,404

    Default

    If all y'all promise not to laugh, here is my first thickness gauge that cost me NOTHING except a scrap of pine and 4 inches of 5/16" dowel. I calibrated that dowel with a pen mark for various areas of the top, and a second dowel was calibrated differently for the slightly thinner back plate. Nowadays it sits on the shelf while I use my dial gauge, but I built the first two mandos this way.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	040905_1.jpg 
Views:	219 
Size:	28.5 KB 
ID:	15593  
    http://www.stephaniereiser.com then click mandolins

  15. #65
    Violins and Mandolins Stephanie Reiser's Avatar
    Join Date
    Jun 2004
    Location
    St. Albans, Maine
    Posts
    1,404

    Default

    Another view.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	040905_2.jpg 
Views:	206 
Size:	28.1 KB 
ID:	15594  
    http://www.stephaniereiser.com then click mandolins

  16. #66
    Registered User PaulD's Avatar
    Join Date
    Oct 2004
    Location
    Salt Lake City, Utah, USA
    Posts
    1,881

    Default

    Quote Originally Posted by (Amanda Lyn @ April 30 2006, 06:27)
    If all y'all promise not to laugh, here is my first thickness gauge that cost me NOTHING except a scrap of pine and 4 inches of 5/16" dowel.
    Ha... ha... ha.. (I never promised!).

    Seriously, that's a great starter caliper! Low investment but it got you building and got the job done. As far as I'm concerned you get extra points for ingenuity and "doing it" rather than letting resources and excuses slow you down.

    Paul Doubek
    "... beauty is not found in the excessive but what is lean and spare and subtle" - Terry Tempest Williams

  17. #67

    Default

    Here are a couple I just built out of aluminum. One is complete I need to finish the other



    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	web_page.jpg 
Views:	364 
Size:	122.1 KB 
ID:	15694  
    '02 Gibson master model #70327 02-01-02
    '25 Gibson A-4 Snakehead #82626
    '06 Hicks #1 and #2 F-5 still not done

    Gibson F-5 Master Model Registry

  18. #68
    Registered User
    Join Date
    Jul 2005
    Location
    Central Iowa
    Posts
    1,878

    Default

    Stephanie...

    I'd bet that over the years, many instruments have been built with very similar gauges. A fine enough line, and a smooth enough fit, and there is no reason why you can't get within just a few thousandths of where you want to be. Even the thickness of the pencil line can be part of your measurement.

    Great ingenuity!

    Ron
    My wife says I don't pay enough attention to what she says....
    (Or something like that...)

  19. #69
    Registered User buddyellis's Avatar
    Join Date
    Mar 2006
    Location
    Lakewood, CO
    Posts
    1,062

    Default

    Here's my first go. Poplar frame with the Harbor Freight $13 analog dial indicator. Wish I'da noticed the $19 digital one, but this will work. I think I will make a new frame out of something more stiff than poplar, (or maybe add some laminations to the back end of it to stiffen it up a little) and make the mouth a bit deeper on the bottom side, but overall it works great.

    The 'adjuster' is just a heavy wood screw with a blob of solder on the top of it to 'round it off'. The stock is just 1x4 poplar board, cut a dado into the bottom support.



    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	caliper.jpg 
Views:	302 
Size:	93.3 KB 
ID:	20118  

  20. #70
    Registered User
    Join Date
    Jan 2003
    Location
    Hopewell,NJ
    Posts
    1,189

    Default

    Buddy,

    I also had some problems with the frame flexing. I went to HomeDepot and bought some steel plates (stright and L shaped) and placed them on both sides of my frame, bolting through. The plates come in various sizes and have 1/4" holes in various places - very convenient. This added stiffness significantly! There's a picture of it on my blog.

    Avi
    Avi

  21. #71
    Violins and Mandolins Stephanie Reiser's Avatar
    Join Date
    Jun 2004
    Location
    St. Albans, Maine
    Posts
    1,404

    Default

    Buddy, I solved the flexing issue by making the frame of the unit from 3/4" scrap plywood. Here is a picture, albiet poor.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	111706_2.jpg 
Views:	373 
Size:	70.3 KB 
ID:	20121  
    http://www.stephaniereiser.com then click mandolins

  22. #72
    Registered User
    Join Date
    Dec 2002
    Location
    Madison Indiana
    Posts
    376

    Default

    Stephanie, what's in the cup? Ebony flakes ? #I know I have drank some ebony, spruce, purple heart, and maple now and then. #It's hard to work and remember to keep your refreshments clean. #I keep a piece of sand paper over my cup when makeing chips (if I remember that is). What do the rest of you do?
    Bill P.



    I am a nobody, and nobody is perfect; therefore I am perfect.

  23. #73
    Violins and Mandolins Stephanie Reiser's Avatar
    Join Date
    Jun 2004
    Location
    St. Albans, Maine
    Posts
    1,404

    Default

    its actually inlay filler gunk.
    Just kidding. Hot chocolate.
    pretty grundgy-looking, huh...
    http://www.stephaniereiser.com then click mandolins

  24. #74
    Registered User buddyellis's Avatar
    Join Date
    Mar 2006
    Location
    Lakewood, CO
    Posts
    1,062

    Default

    Does anyone know where to find one of those topo maps that are out there that show plate thicknesses? I could have sworn I've seen one on the board, but darned if I can find it now.

    Thanks

    -b

  25. #75
    _________________ grandmainger's Avatar
    Join Date
    Jun 2004
    Location
    Tokyo, Japan
    Posts
    1,673

    Default

    Quote Originally Posted by (buddyellis @ Dec. 31 2006, 00:27)
    Does anyone know where to find one of those topo maps that are out there that show plate thicknesses? #I could have sworn I've seen one on the board, but darned if I can find it now.
    The ones created by Andrew Mowry are in the MIMF Archives. Lots of explanation about how to get them on these threads
    Germain

Similar Threads

  1. Top thickness
    By mandoplyr70 in forum Builders and Repair
    Replies: 3
    Last: Feb-08-2008, 8:41pm
  2. Top Thickness
    By Slim Pickins in forum Looking for Information About Mandolins
    Replies: 4
    Last: May-31-2006, 7:58am
  3. Rib thickness?
    By amori in forum Builders and Repair
    Replies: 24
    Last: May-18-2006, 9:34pm
  4. top thickness
    By joshro78 in forum Builders and Repair
    Replies: 1
    Last: Nov-08-2004, 10:15am
  5. thickness
    By keymandoguy in forum Builders and Repair
    Replies: 3
    Last: Aug-23-2004, 3:27pm

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •