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Posted by Ignoramus12714 on June 4, 2007, 12:15 am
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I welded together a mobile base for a Bridgeport mill. (the casters
are removable so that for stationary operation, they are not
interfering and the casters do not get flat spots).
Most steel stock used came from a great Memorial Day garbage find.
http://igor.chudov.com/projects/My-Bridgeport-Mill/Mobile-Bridgeport-Mill-Base-On-Casters/
http://tinyurl.com/yrbg38
There you can see some pictures, notes and video.
Here are the notes:
Pictured here is a homemade base for a Bridgeport mill that runs on
casters. Design Objectives
* A failure of the base should not make the mill fall (hence it
needed small floor clearance)
* The bars with casters should be removable so as not to take
valuable floor space and not to be a tripping hazard
* During operation, the mill would stand on 2x4s beneath the base,
with casters removed
* Bars with Casters should be easy to mount again if the mill
needs to be moved.
Some notes
The base is made from 1/4" flat stock (1/4" by 5" steel bar) and 1/4"
angle iron. The bars holding casters are 3/16" thick 1.25" steel
square tubing.
The casters are something to behold, these are NOT the usual Harbor
Freight "heavy duty" casters. I bought them on eBay for $40, Here's
the auction screenshot. They are rated for 2,400 lbs each, all swivel,
and are made from very heavy plate. (1/2" and 3/8")
The welded-on a T-nut with a bolt in it (seen in front) was attached
to provide attachment point for an eyebolt in case if the mill needs
to be pulled. It is threaded for 1/2"-13 NC. The bolt is there just to
show it better, it will be replaced with an eyebolt.
Enjoy the video of this base being gently kicked.
The internal dimensions of the base are 1/2" more than the dimensions
of the bridgeport base.
Credits -- the PDF file showing Bridgeport mill base dimensions was
created by Richard Kinch (see his shop). As a thank you, here's an SEO
friendly organic link to his site: TeX for Windows.
Todo list: remove diagonal bar (tacked there for rigidity while
setting up the frame), wire brush and paint the frame, drill 3/4"
holes in the bottom of the frame for bolting the mill to the base.
(Click on the thumbnail images to enlarge)
PDF Document: Bridgeport-Mill-Dimensions-By-Richard-Kinch.pdf
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Posted by jp2express on June 4, 2007, 10:36 am
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Sup I?
Are you inviting us to post our projects on here?
http://www.poojo.com/weld01/
That's a trailer project of mine that turned out really well.
It is one heavy duty trailer; unfortunately, I now run my rig on a Toyota
Flatbed.
The trailer is being stored in a barn.
The custom jig that the welding machine and torch bottles sat on will
probably be sold within the next few months on eBay.
~Joe
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Posted by Ignoramus27175 on June 4, 2007, 10:59 am
Please log in for more thread options wrote:
> Sup I?
>
> Are you inviting us to post our projects on here?
>
> http://www.poojo.com/weld01/
Looks very interesting! (and great photos too). I wonder though if the
"A" part of your frame is rigid enough.
> That's a trailer project of mine that turned out really well.
Looks very nice.
Here's my trailer project:
http://igor.chudov.com/projects/Homemade-Trailer-With-M105A2-Bed/
i
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Posted by jp2express on June 4, 2007, 11:43 am
Please log in for more thread options > Looks very interesting! (and great photos too). I wonder though if the
> "A" part of your frame is rigid enough.
Really? What would you have suggested? Since I used 3/8-inch thick 3x3 angle
iron welded to 3/8-inch plate, I never thought that would be an issue.
It is certainly more stable than the cheap Harbor Freight trailer I started
with! It gave me some gray hairs a few times while pulling it down the road.
Once, an offset speed bump nearly toppled the rig and caused me to stain the
seat of my truck.
> Here's my trailer project:
>
> http://igor.chudov.com/projects/Homemade-Trailer-With-M105A2-Bed/
>
I liked the electrical box idea, but did not see where it was used on the
trailer. Did you go with something else?
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Posted by Ignoramus27175 on June 4, 2007, 11:49 am
Please log in for more thread options wrote:
>> Looks very interesting! (and great photos too). I wonder though if the
>> "A" part of your frame is rigid enough.
>
> Really? What would you have suggested? Since I used 3/8-inch thick 3x3 angle
> iron welded to 3/8-inch plate, I never thought that would be an issue.
I think that with the 3/8" plate, it is definitely not an issue! I
assumed, very wrongly that you had a 1/8" plate.
> It is certainly more stable than the cheap Harbor Freight trailer I started
> with! It gave me some gray hairs a few times while pulling it down the road.
> Once, an offset speed bump nearly toppled the rig and caused me to stain the
> seat of my truck.
>
>> Here's my trailer project:
>>
>> http://igor.chudov.com/projects/Homemade-Trailer-With-M105A2-Bed/
>>
>
> I liked the electrical box idea, but did not see where it was used on the
> trailer. Did you go with something else?
I do not have the pictures of the trailer with the box mounted, the
box is on the trailer as of now, it hosts all electricals and has a
compartment for paperwork and small stuff.
i
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>
> Are you inviting us to post our projects on here?
>
> http://www.poojo.com/weld01/