[TheForge] Fire place crane update
Bob Ehrenberger
eforge at centurytel.net
Sat Dec 4 15:24:01 EST 2010
I just delivered the fireplace crane and the customer was delighted.
For mounting hardware, I decided to go with the flat strap with the bend on
the back side to hook on the back side of the brick. I used a piece of 3/8"
x 1 1/2". I tapered it down to about 1/8" thick where the hook was.
Other information on the crane. For the top bar, I used 3/4" x 1 1/2" which
I drew to a long taper and ended up 1/2" x 3/8" at the very end where I had
a short section turned up. I made a 1/2" tennon on the end that attached to
the upright bar. The top bar started out 19" long and ended up 31" long
after the taper. I could have used lighter stock for this and had enough
strength, but the other cranes in the village had very heavy top bars.
The upright was made from 3/4" sq. with 1/2" tennons top and bottom. I slit
and drifted the hole where the top bar connected to it. The original cranes
used 1" rd for the uprights, but I figured that a round bar would make the
connections more difficult and the only 1" rd that I have in stock is sucker
rod which would further complicate things..
I had a diagonal brace made from 1/2" sq. which was riveted to the top bar
and the upright. I did a reverse twist on this bar for a little decoration.
There was no decoration at all on the othere cranes, the customer had
indicated that she wanted a little artistic touch. I figured that a simple
twist would not be too fancy for the village.
I also made a gauge bar out of 1/2" rd. to help the mason line up the hinge
bars (mounting hardware). The gauge had tape marking the locations of the
tennons on the upright, to make sure the hinge bars were the right distance
apart.
All and all I am pretty happy with the way it came out, it looks a lot like
the old cranes in the other historic buildings.
Robert Ehrenberger
Shelbyville, Mo.
eforge at centurytel.net
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