| Author |
Topic: Higgin´s Boat in Argentina - Ushuaia January 2014 |
|
Higgins Fan
Advanced Member
|
  
 Posted on: Jan 22, 2014 - 12:25pm
|
We have exhausted our efforts to acquire an artifact exhaust muffler. The Argentine Captain we spoke to went silent, and outreach to other known locations was unproductive. We searched Timmons Cove using an underwater archaeologist firm to discover there is way too much underwater debris to effect an id on anything.
Too bad we could not get one but In the future, someone in need of a Higgins portside muffler can contact the museum.
--
National WWII Museum
PT-305 Restoration
Phone: 504-528-1944 Extension 375
|
Total Posts: 128 | Joined:
Aug 17, 2012 - 7:48pm | IP
Logged
|
|
Jeff D
Moderator
|
Posted on: Jan 22, 2014 - 3:48pm
|
This would be perfect for rapid prototyping with a 3D printer, it would be easy to scale a 3D model up 2%. I don't know the current size limitations or cost but a plug could be made in sections if needed. I figure that's most of the 15K cost.
Check out the brass printed fire monitors Pat made: http://members.boardhost.com/Warship/msg/1390353531.html. If you read this, very cool Pat! Any idea of the cost to get a plug printed for a Higgins muffler?
|
Total Posts: 2200 | Joined:
Dec 21, 2006 - 1:30am | IP
Logged
|
|
Dick
Moderator
|
Posted on: Jan 23, 2014 - 9:24am
|
The issue with metal shrinkage, and 2%, is it is just an estimated number of overall shrinkage. This muffler is roughly 2' x 4' and its a big part when considering 2% shrinkage. However, the shrinkage wouldn't be consistent throughout the part, because of size, shape, structure, vanes, spherical/cylindrical cross sections would all shrink at different rates. Whereas a square cube or flat bar would more than likely shrink more consistently on all of it edges.
I'm sure a big part of the 15K is the engineering drawings. The only Higgins drawing I'm aware of is the simple detail drawing not all of the casting and cast mold drawing. The hired firm would basically reverse engineer the piece (nowadays) in a 3D modeling program, like SolidWorks, then create multiple detailed manufacturing drawings for casting, and finish machining, so on and so on.
This is all a big task for a big part that is only a one-off - hard to impossible to recapture the cost.
I'll check with a source of mine for anymore guidance.
|
Total Posts: 1417 | Joined:
Aug 27, 2006 - 6:36pm | IP
Logged
|
|
Higgins Fan
Advanced Member
|
Posted on: Jan 23, 2014 - 10:14am
|
We are commissioning a Pattern Maker to build a form. We have a 3D digital model of it; going "Old School" so we can pour multiple times if needed. The cost of making a pattern is in the $10k range. Another $3.5 to pour a cast. $15k by the time it is machined.
--
National WWII Museum
PT-305 Restoration
Phone: 504-528-1944 Extension 375
|
Total Posts: 128 | Joined:
Aug 17, 2012 - 7:48pm | IP
Logged
|
|
Higgins Fan
Advanced Member
|
Posted on: Jan 23, 2014 - 10:14am
|
We are commissioning a Pattern Maker to build a form. We have a 3D digital model of it; going "Old School" so we can pour multiple times if needed. The cost of making a pattern is in the $10k range. Another $3.5 to pour a cast. $15k by the time it is machined.
--
National WWII Museum
PT-305 Restoration
Phone: 504-528-1944 Extension 375
|
Total Posts: 128 | Joined:
Aug 17, 2012 - 7:48pm | IP
Logged
|
|
Higgins Fan
Advanced Member
|
Posted on: Mar 24, 2014 - 2:14pm
|
The saga continues.
--
National WWII Museum
PT-305 Restoration
Phone: 504-528-1944 Extension 375
|
Total Posts: 128 | Joined:
Aug 17, 2012 - 7:48pm | IP
Logged
|
|
Higgins Fan
Advanced Member
|
Posted on: Oct 31, 2014 - 5:22pm
|
We now have an exhaust muffler 50 percent complete. It is being fabricated in Louisiana, and the quality is great.
--
National WWII Museum
PT-305 Restoration
Phone: 504-528-1944 Extension 375
|
Total Posts: 128 | Joined:
Aug 17, 2012 - 7:48pm | IP
Logged
|
|
 |
TED WALTHER |
TOP BOSS
|
Posted on: Nov 1, 2014 - 8:39am
|
Glad to hear you guys found a foundry close by, sorry mine on the Eastern Shore did not pan out, keep charging forward!
Take care,
TED
|
Total Posts: 3059 | Joined:
Oct 16, 2006 - 7:42am | IP
Logged
|
|
|
