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hammernanvil
01-08-2017, 09:22 PM
Ok, so it's not really a Bosch Power Draw bar, but rather a Bosch Plunge router base, re-purposed into a power draw bar.

http://i1248.photobucket.com/albums/hh499/hammernanvil1/IMG_9675_zpsdkoekoiu.jpg (http://s1248.photobucket.com/user/hammernanvil1/media/IMG_9675_zpsdkoekoiu.jpg.html)

Doozer
01-08-2017, 11:42 PM
I like your style!!!

-D

lakeside53
01-08-2017, 11:48 PM
Nice... What drives it?

_Paul_
01-09-2017, 01:36 AM
Nice bit of repurposing! how are you going to operate the control on the butterfly wrench?

Paul

hammernanvil
01-09-2017, 07:49 PM
Nice... What drives it?

It has a harbor freight pneumatic butterfly wrench mounted in it, that will power it. I don't have the air line hooked up yet.

hammernanvil
01-09-2017, 07:50 PM
Thanks. I'll put some kind of handle on it to control the direction.

lakeside53
01-09-2017, 07:52 PM
It has a harbor freight pneumatic butterfly wrench mounted in it, that will power it. I don't have the air line hooked up yet.

Show us more detail.. we like it!

_Paul_
01-09-2017, 07:57 PM
This is the control handle on my shop made power drawbar, your butterfly wrench looks almost the same as mine you could perhaps do something similar:

http://i1177.photobucket.com/albums/x358/Donkey0atey/My_Bridgeport_Power_Drawbar/100_3813_zpsjheppune.jpg

Paul

hammernanvil
01-09-2017, 09:43 PM
This is the control handle on my shop made power drawbar, your butterfly wrench looks almost the same as mine you could perhaps do something similar:

http://i1177.photobucket.com/albums/x358/Donkey0atey/My_Bridgeport_Power_Drawbar/100_3813_zpsjheppune.jpg

Paul
Yes I had something very similar in mind. The handle will probably have to be quite a bit longer though. I'm also just using a light oil on/in
the shaft/spring area, no grease.

hammernanvil
01-09-2017, 09:45 PM
Thanks Doozer

dian
01-10-2017, 12:19 AM
why is everybody using these air wrenches when 230v or 12v tools are available? why does the wrench have to disengage instead of running with the spindle?

hammernanvil
01-19-2017, 06:16 PM
why is everybody using these air wrenches when 230v or 12v tools are available? why does the wrench have to disengage instead of running with the spindle?
Not sure that everyone is using them. Also I would rather have the wrench disengage so that it doesn't wear as fast, Just my thinking.

hammernanvil
01-19-2017, 06:21 PM
As requested, here is some additional info/video of the Power Draw bar.

My video making skills are far from the best, I just don't care to spend that much time on them right now. Anyway here are the
Links to the Bosh, power drawbar video I made.


https://www.youtube.com/watch?v=0h-WAEBtFYo&t=4s




https://www.youtube.com/watch?v=Ay0yu5lBGVs&t=313s

garyhlucas
01-19-2017, 09:17 PM
why is everybody using these air wrenches when 230v or 12v tools are available? why does the wrench have to disengage instead of running with the spindle?
You can't back drive an air or electric wrench, they have a hammer mechanism. The air tools nearly always have round mounting surface where a handle would go while electric tools don't so they are hard to mount. I had a CNC mill that had an electric wrench that had the handle and trigger removed and it worked well but that buikt back in the early 80s.

dian
01-20-2017, 01:19 AM
your right on the 230v model i have. the 12v however will spin freely in both directions, the socket is completly diengaged. my air powered one will rotate in both directions, but the turbine probably moves with it, so not sure how it would hold up long term. anyway, the tools are unexpensive and could be replaced easyly, instead of making all the complicated and expensive mechanisms (if air powered).