Cigar Box Nation
#1 resource for Cigar Box Guitars, Free Plans, How-To, Parts & More!
Presented by C. B. Gitty Crafter Supply, your one-stop-shop for Cigar Box Guitar parts and accessories!
A discussion of building or buying a carver machine to using Bondo as a pattern and other helpful tips.
Latest Activity: Jun 10
This group does not have any discussions yet.
Tried out the copy carver for the first time. I had scaled it down 25% from
the original plans, but I don't think that had anything to do with the fact
that it couldn't handle the carving of my tupelo cat with the head offset from
the body, where the depth and axis changes as you rotate the model
and the blank through the four 90 degree locking quadrants.
Made a bit of a mess with my test blank..(basswood)..thankfully I had
the presence of mind not to attempt it with expensive imported tupelo
on the first attempt to use it. From what I can tell, it just can't handle
the Z axis very well. I suppose if I was doing fish with an X axis going
straight through from the V in the tail to the tip of the snout..it would be
fine though. Back to carving the cats with my Foredom flexi-shaft rotary
carving motor. Live and learn as they say....sigh!
Still in the fine process of tuning the copy carver. Raised the wooden rails up another
3.5 inches using a 2x4 and a strip to join that 2x4 to the existing 2x4 that has the
hollow pipe attached for the swing box carriage to move on.
Starting on pouring my own stylus (hot lead alloy that melts with a propane torch) to match a tapered Silver Kutzall carving tip. I found that the stylus and burr supplied by Ed (designer of the carving duplicator) much too large to get into small carving details. While it is good for initially removing copious amounts of wood off the basswood block, the large ball nose carving burr just doesn't lend it's self to any detail work. But this is part of the learning curve of making a carving duplicator, much like learning to carve in the round using hand tools.
I'm up in Canada, so I initially used Princess Auto for ordering the v-belt pulleys
and pillow blocks. Got the pulleys, but they were sold out of 5/8 pillow blocks and
I ended up getting some bronze bearings locally and soldered round brackets to
them an using these. Princess Auto also has 1/2" pillow blocks.
I ended up using 1/2 " diameter steel axle shafts on mine as mine is scaled down
about 25% from the original plans.
Yes building a machine as a lot of details that could fill several books. As you see whats wrong you will change it.
Thats thats the reson I do not make a set of plans for folks to buy, to many details.
Even as much as I know I still had to rebuild my machine a little, but I did think it could work at first. Then I saw details that I mised, wowzers now its finished.
Can't seem to edit my own posts...
previous post should read
"came up with a round rod that I bent at 90 degrees to act as a index key lock.
This fits into a corresponding hole in the rotating wood base that is attached"
to the carving blank with screws.
I think that the centerline of the router tip and the centerline of the stylus have to
be setup so that they register properly, so when the swing box is moved the
exact point on the blank is machined that the stylus is touching.
The plans didn't go into this detail, and this is the finicky trial and error stuff
that takes time..the setup.
I think I will raise the swing box rails another 4 inches in height and see if
the rest position of the router bit is about midpoint on the carving blank as
I can only do a 90degree cut and then rotate the mount another 90 degrees
to do another cut..until I come up to 360. The carving offset should be interesting
to see how that works out. A fair bit of engineering and ingenuity is required to
make these for carvings that are NOT symmetrical in nature.
I came uo with a round round (bent to 90degrees) DETENT, that fits into the
wooden base at 90 degree offsets, This way I can lock it down at 90degree.
At the "headstock" end, I just have an adjustable pivot point to support the
head to keep it from vibrating as the router bit starts to gind away wood.
Got the mounts finished, (using 3mm aluminum plate,
but some minor problems with registration when rotating
on axis. 90degree rotation stops installed in my mounts.
Two main issues.
1) the carving is not symetrical (cat) and as I rotate it, there is offset.
2) the mount height and the swing box height still needs to be adjusted because
I think that the stylus and router bit should be at rest at the midpoint line
of the carving on the mount.
Here are some pics of what I am talking about.
Yes, thanks Bob. I generally do that..try out an idea out of my head that I get from
somewhere and then modify it to make it work to my satisfaction. I subscribe
to the "mothers of invention"..or in my case "grandfathers of invention?"
I'll give a progress update..starting it this week..because I can't stand looking at
Welcome toCigar Box Nation
Sign Upor Sign In
Or sign in with:
September 20, 2014 all day – The Earl Of Beaconsfield Pub
September 28, 2014 from 1pm to 4pm – The Strum Shop, 408 Roseville Square, Roseville, CA 95678
October 4, 2014 at 10am to October 5, 2014 at 2am – ROUTE 42 - Concert Hall
November 7, 2014 at 6pm to November 8, 2014 at 10pm – Brauerhouse 1000 North Rohlwing Road, Lombard,Illinois
Posted by Shane (www.ShaneSpeal.com) on September 17, 2014 at 8:54am
Posted by Jennifer Winget on September 12, 2014 at 12:30am
Posted by 407bug on September 10, 2014 at 4:50am
Posted by Paul Taylor Odiase on September 6, 2014 at 6:00am
Posted by John Dill on September 3, 2014 at 2:44pm
Posted by Glenn Watt on August 31, 2014 at 9:11pm
Posted by Ridwan Shafal on August 30, 2014 at 2:30pm
Posted by billy jones bluez on August 26, 2014 at 12:30am
Posted by Glenn Watt on August 14, 2014 at 9:00pm
Posted by dave price on August 9, 2014 at 7:16am
“Open D” DAD Tuning on your Cigar Box Guitar: 4 Methods, with String Sizes & Sound Clips
“Open G” GDG Tuning on your Cigar Box Guitar: 4 Methods, with String Sizes & Sound Clips
Diatonic (Dulcimer-Style) Fretting – What it is, How and Why to Use It
Differences between Piezos and Magnetic Pickups
How to Cut a Rod Piezo
How to Pick the Right Strings for your Cigar Box Guitar
CBG Bling: Decorating Ideas for your Cigar Box Guitar
Deciding whether to fret your cigar box guitar
How to Install a Pre-Wired Piezo Harness in a Cigar Box Guitar(C. B. Gitty Product #50-014-01)
How to Eliminate Hum and Buzz on your electric Cigar Box Guitar
© 2014 Created by C. B. Gitty (Ben).
Report an Issue |
Terms of Service
Cigar Box Nation is sponsored by C. B. Gitty Crafter Supply, your one-stop-shop for Cigar Box Guitar parts and accessories!
Please check your browser settings or contact your system administrator.