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Timbuck
06-05-2010, 05:40 AM
This is my Bender in use for the last time before I refurbish it..I recon it's bent about 90 pairs of soprano sides to date ..
http://i219.photobucket.com/albums/cc143/shiregreenbod/1917%20uke/bender%20damage/PICT7107-1.jpg
and the heat generated into the steel heat containment rods, has chard away the woodwork causing the form plate and workpiece to drop in the area of the uke waist and it is now producing sides that have to be adjusted on the hot pipe.. I intend replacing the damaged parts with Aluminium plate...Here is short slideshow of the damage..Click on the small image to view.
http://s219.photobucket.com/albums/cc143/shiregreenbod/1917%20uke/bender%20damage/th_PICT7107-1.jpg (http://s219.photobucket.com/albums/cc143/shiregreenbod/1917%20uke/bender%20damage/?action=view&current=fc5ee875.pbw)

Pete Howlett
06-05-2010, 08:55 AM
Why don't you try heat blankets Ken?

Timbuck
06-05-2010, 09:01 AM
They give me "Prickly Heat" :confused: ... Just kidding :D....I will give that method consideration...But I do have a load of Halogen bulbs.

maclay
06-06-2010, 07:02 PM
I recently started bending with a heat blanket and bulbs. Heat from the top and the bottom, works great.

Jake Maclay
http://www.hiveukuleles.com/

Moore Bettah Ukuleles
06-06-2010, 07:05 PM
Or with two blankets like me. One on each side. Makes 'em nice and toasty!

Timbuck
06-10-2010, 02:24 AM
Today I completed the new bender former, all made from metal "Aluminium sides, CRS rods, and Stainless steel .5 mm sheet"
http://i219.photobucket.com/albums/cc143/shiregreenbod/Jigs%20and%20things%201/PICT7222.jpg
http://i219.photobucket.com/albums/cc143/shiregreenbod/Jigs%20and%20things%201/PICT7220.jpg
Now back in the Cooker to test on a new set of sides
http://i219.photobucket.com/albums/cc143/shiregreenbod/Jigs%20and%20things%201/PICT7223.jpg
Now thats a lot better...works better now than it ever did...I luv it !
http://i219.photobucket.com/albums/cc143/shiregreenbod/Jigs%20and%20things%201/PICT7233.jpg

Matt Clara
06-10-2010, 05:51 AM
I bet the salmon would fry right up on that beauty!

Timbuck
06-18-2010, 06:45 AM
I'm so pleased with my refurb'ed Soprano bender, that I've decided to make another one using the same design but for Tenor size..The weather has been favourable so I'm building it out in the garden..this is it so far.
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7300a.jpg

fromthee2me
06-18-2010, 06:56 AM
Timbuck , Thank you for the thread and the pictures. Your workshop exploits are always very interesting, and soon you'll have to expand that area. BTW your cabbages look good!

GrumpyOldMan
06-18-2010, 08:36 AM
Thread title still makes me laugh when I see it. Roy Chubby Brown would be proud.

Timbuck
06-18-2010, 08:54 AM
Timbuck , Thank you for the thread and the pictures. Your workshop exploits are always very interesting, and soon you'll have to expand that area. BTW your cabbages look good!

Just for "Thee from Me"...a close up.
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7305.jpg

Twitch
06-18-2010, 01:08 PM
Hi Timbuck,

I like your set up alot. I was also thinking about building a bender with halogen bulbs. How much watts does your bulb have? Now that I've seen what the lamp does to wood, I guess I'll be visiting my local machinist to see how much that would cost me. A heating blanket here in Germany costs about €100 (they sell them in 110V and 220V). A question to blanket users: Does the heat blanket also char the wood on your forms?

Timbuck
06-18-2010, 11:10 PM
Most of the charing occured when I left the bender switched on....and then i got called away to answer the the telephone, and I forgot about it..luckily I was using it outdoors at the time...(could have set the workshop on fire)....The halogen bulb is 500 watt, take's about 3 to 4 min's to get up to heat.

Allen
06-19-2010, 12:04 AM
A heat blanket gets very hot, very very fast. You never leave it unattended even for a minute. That said, it would only char the wood if you didn't follow the first advice.

I bend a set of uke sides with my set up and heat blanket in 2 minutes flat, so it's a real time saver if that is your first priority. I've also never cracked or broken a side using it. Where it has it's shortcomings is requiring a dedicated bending form for every size and style of instrument that you plan on building. And then there is the problem of storing all those forms. Trade off's to be sure, but I wouldn't part with mine.

Timbuck
06-19-2010, 03:07 AM
Hi Timbuck,

I like your set up alot. I was also thinking about building a bender with halogen bulbs. How much watts does your bulb have? Now that I've seen what the lamp does to wood, I guess I'll be visiting my local machinist to see how much that would cost me.
Why visit a machinist ?..Aluminium cuts like butter with wood working tools just slow down the feed rate a bit..I made mine with Bandsaw and bench drill and cut the steel bar with Hacksaw.

Timbuck
06-19-2010, 05:23 AM
My past experience has taught me that the upper clamping caul also has to be as accurate as the bottom former..Just pushing some round shape into the waist can produce distortions..so i make a simple routing template jig and make enough pieces to build the caul.
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7309.jpg
When all the pieces are assembled and glued together on a steel rod it should look like this.
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7312.jpg

Dominator
06-19-2010, 10:16 AM
Great stuff Timbuck.

SweetWaterBlue
06-19-2010, 12:09 PM
That press reminds me a lot of the one at Godin guitars, only a lot smaller and without the top screw.

http://www.youtube.com/watch?v=-XfBRdxzshI

Timbuck
06-20-2010, 08:17 AM
I installed the Heating Element today..an old 500W halogen sun flood..I got this free co's the lid/glass was missing (I would have removed it anyway)
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7318.jpg
It's coming together nicely..I just need a few more parts and then I can test it out.
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7325.jpg

Timbuck
06-24-2010, 06:49 AM
I got the Tenor Bender up and running today...I made six cute mahogany screw knobs in the lathe and fitted threaded inserts into them..riveted together the top stainless sheet former...I got plugged in and let it get up to heat....I need to make a device to hold the top plate out of the way instead of the bunjee.:confused:
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7328.jpg
Then inserted a pair of damp sides.
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7335.jpg

Timbuck
06-24-2010, 06:58 AM
Next I clamped it all up and let it stew for a while.
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7337.jpg
and here are the first test pieces..Not bad for a first off
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7343.jpg
and it fits the mould pretty good too.
http://i219.photobucket.com/albums/cc143/shiregreenbod/PICT7348.jpg

Garry Petrisic
06-24-2010, 01:40 PM
What a great piece of work! I am in awe of your engineering. I like the metal one you have just done. Trouble with me is that I do not stick to the same shape twice.
What Voltage does it run at ? I do all my stuff by hand and eye. This does cause some errors occasionally. I wish I had the time to build a clone of yours. All I can say is "Brilliant !" Maybe you can post some more details and some plans, list of electricals required etc so I can get one unerway. I am building an Arch top Uke. Talking to Brad Donaldson. Thread," Building an arch top uke."
Thanks for the great pics and effort you have taken to show us your work. I like the bird.
Regards Garry Petrisic.