[6261] in APO Printshop
Re: Vice on table
daemon@ATHENA.MIT.EDU (Leonard H Tower Jr.)
Fri Jan 28 00:18:43 2011
Date: Fri, 28 Jan 2011 00:18:39 -0500 (EST)
From: "Leonard H Tower Jr." <tower@alum.mit.edu>
To: Catherine Olsson <catherio@mit.edu>
cc: Charley Hamilton <charley.hamilton@gmail.com>,
Mitchell E Berger <mitchb@mit.edu>, apo-printshop@mit.edu,
rhkeeler@mit.edu, "apo-president@mit.edu" <apo-president@mit.edu>
In-Reply-To: <4D410D5A.7030305@mit.edu>
Date: Thu, 27 Jan 2011 01:14:50 -0500
From: Catherine Olsson <catherio@MIT.EDU>
Thanks so much for the suggestion, Charley! I'm glad you have the technical
know-how to understand what would be involved - I sure don't =).
I'm *sure* it will be easier to find a bit of space for a wall-mounted vice
than for an entire waist-height table, and there will be more layout freedom
for future rearrangements too. Presshop, would this be feasible for your
needs?
What Charley has in mind is about the same size and height as the
current table. You need a certain amount of working space to use a
vice. An ideal workbench would be a good bit longer.
He's concerned about use of the vise being safer. What he proposed
will also make for a vise that is easier to use. So, Charley is
offering to design two things:
* A super stiff, super strong workbench for a vice. To do this on
a narrow base, or without floor contact (hanging the workbench on the
wall as a cantilever) would probably add a lot to the cost, and add an
large multiplier to the forces exerted on the wall.
* a super strong way to attach this workbench to one of the
APOffice walls, so it can't be tipped over, or moved.
Ataching the workbench to the wall, requires information from the
Department of Facilities (Charley knew it as 'Physical Plant') on how
the walls are constructed, and exactly what kind of masonry they are.
Facilities could well want approval from the CAC. Facilities might
not want the walls to have this much force exerted on them. They have
a legitimate concern that the walls not be damaged or worse fail.
They might not want to let the information off campus, or accept a
design by Charley.
Note that the forces involved are different and significantly more
intense, than mounting a storage shelf on a wall.
If AX wants to go to this expense, it might make sense to buy a vice
that is larger, has more features, is easier to use, etc.
IMHO, the minuses outweigh the pluses here (if the actives want me to
expand on that please ask), but that's a decision for the actives to
make.
The Press Shop needs are meet by the current vise and table.
yiLFS -len
PS: A minus? Having something fixed to a wall constrains APOffice
reorgs. They are hard to move. How might the APOffice work better if
the largest bulletin board or the vertical floor to ceiling chalk
board were moved, or gone?
On 01/26/2011 10:59 PM, Charley Hamilton wrote:
> On Tue, Jan 25, 2011 at 11:57 PM, Mitchell E Berger<mitchb@mit.edu> wrote:
> >
> > Folding table we can store in the printshop, maybe near the Dexion's
> > usual home? That would be a little less high than the existing
> > table, but mostly satisfies the height need. It satisfies the
> > working room need because you can take it out and place it wherever
> > you want to work. It does not satisfy the thickness or sturdiness
> > goals, but we could perhaps get an additional piece of wood about
> > the same dimension as the folding table's top, stored in the same
> > place, that can be put on top of it when you want to use the vice
> > to thicken and reinforce it.
> >
> > This table could potentially find other uses, too - maybe for
> > ironing silkscreened shirts in the office.
> >
> > Mitch
>
> Regarding mounting of bench vises, I have a 6" jaw vise mounted in my
> garage on a home-built workbench. The workbench weighs in excess of
> 600# (including all of the misc tools inside) and I still manage to
> tip it occasionally when working with the vise. Any "tabletop"
> solution would need to have adequate mass to resist uplift/overturning
> while using the vise.
>
> Is there a location in the APOffice where the vise could be mounted to
> a wall? How averse are folks to discussing placement of a 2-3 epoxy
> anchors into the CMU walls with Phys Plant? I can probably work up a
> design (being an structural engineer comes in handy that way) that
> could resist the necessary design forces if the Press Shop and Exec
> Comm can agree on a home.
>
> If the masonry wall is grouted (Phys Plant's structural drawings and a
> 1C or Phys Plant engineer to read them could answer this), it could
> even be done with something like a Simpson Titen HD anchor. That
> would only require drilling the holes in the masonry, and driving the
> screw anchor in place. APO could rent the hardware to do the install
> (Hilti rotary hammer drill and an impact driver) from Home Depot's
> rental department, and the whole thing would be removable (unlike an
> epoxy anchor, which would need to be cut off flush) if the APOffice
> ever moves.
>
> If this is of interest, and somebody can give me a description of the
> vise and what it is used for, I could back-of-the envelope a
> wall-mounted solution that APO could price. That way, Exec Comm and
> the Press Shop could consider cost in their decision.
>
>
> YiLFS,
>
> Charley
