My neighbor the blacksmith has asked me to help with the hinges for a Hobbit door ... they're round and very heavy . He's forging the strap elements , I'll be machining the hinge elements to be welded to his
steel work . My part will consist of machining a pair of stepped pins ,
fat in the middle , and cups for them to pivot in . We're undecided
whether to use a brass thrust washer or a bearing ball in the bottom cup
. Maybe both ...
My neighbor the blacksmith has asked me to help with the hinges for a Hobbit door ... they're round and very heavy . He's forging the strap elements , I'll be machining the hinge elements to be welded to his steel work . My part will consist of machining a pair of stepped pins , fat in
the middle , and cups for them to pivot in . We're undecided whether to
use a brass thrust washer or a bearing ball in the bottom cup . Maybe both ...
"Bob La Londe" wrote in message news:tq4gh6$8v3$1@gioia.aioe.org...
On 1/15/2023 3:50 PM, Snag wrote:
My neighbor the blacksmith has asked me to help with the hinges for
a Hobbit door ... they're round and very heavy . He's forging the
strap elements , I'll be machining the hinge elements to be welded to
his steel work . My part will consist of machining a pair of stepped
pins , fat in the middle , and cups for them to pivot in . We're
undecided whether to use a brass thrust washer or a bearing ball in
the bottom cup . Maybe both ...
See if you can find a place to hide a grease zerk on it. A shot of waterproof wheel bearing grease lasts a long time.
-----------------------
GM uses pressed-in door hinge pins with knurling or an oversized
retaining section under the head and flanged bronze bushings in the
center barrel. The flange takes vertical thrust. They do wear out but
are easily replaced. My Honda has an inconspicuous oil hole in the
center barrel that's accessible with the door open.
My neighbor the blacksmith has asked me to help with the hinges for a Hobbit door ... they're round and very heavy . He's forging the strap elements , I'll be machining the hinge elements to be welded to his steel work . My part will consist of machining a pair of stepped pins , fat in
the middle , and cups for them to pivot in . We're undecided whether to
use a brass thrust washer or a bearing ball in the bottom cup . Maybe both ...
On 1/15/2023 3:50 PM, Snag wrote:
My neighbor the blacksmith has asked me to help with the hinges for
a Hobbit door ... they're round and very heavy . He's forging the
strap elements , I'll be machining the hinge elements to be welded to
his steel work . My part will consist of machining a pair of stepped
pins , fat in the middle , and cups for them to pivot in . We're
undecided whether to use a brass thrust washer or a bearing ball in
the bottom cup . Maybe both ...
See if you can find a place to hide a grease zerk on it. A shot of waterproof wheel bearing grease lasts a long time.
"Bob La Londe" wrote in message news:tq4m7k$2tu6r$1@dont-email.me...
Many an old barn hinge was steel on steel with whatever lube they could
find and sometimes not.
I do like the weld on hinges with bushing and grease zerks though.
Bob La Londe
CNC Molds N Stuff
-----------------------------
I put zerks on all my shop made pivot pins and made sure replacement
vehicle ball and U joints had them, but they distract from the hand
forged aesthetic of blacksmithing. Small holes for these are easier to
hide and good enough for my car doors. https://www.homedepot.com/p/Milton-Narrow-Needle-Nose-Grease-Dispenser-S-3208/314090463?source=shoppingads&locale=en-US
Or you can buy small hex head plugs or setscrews to replace zerk
fittings after greasing them. Bring rags, it's messy.
The OEM ball and U joints on my truck were "lubed for life". They died
when the lube dried out, so the statement was literally correct.
My neighbor the blacksmith has asked me to help with the hinges for a
Hobbit door ... they're round and very heavy .
On Sunday, January 15, 2023 at 2:50:56 PM UTC-8, Snag wrote:
My neighbor the blacksmith has asked me to help with the hinges for a
Hobbit door ... they're round and very heavy .
Sounds like the steel will be OK; as for the heavy door, though, you can't fit strap hinges as easily as mortised ones; they're gonna attach
with through-the-face screws to the door and a heavy timber post?
That heavy door will shift unless the strap hinges are secured by something more than friction;
one solution is to heat 'em cherry red and press into the wood, to make a socket that
won't allow the strap to twist. The entire periphery of the strap has a wood socket that way.
Otherwise, the few-screws wood/metal contact will just crush the wood fiber and things will move.
Getting the hinges correctly in-line will be important, of course, and I'd want to have
a bore-indicating laser pointer to guide the hinge placement.
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