[AT] reproduction parts

[Stephen Offiler]

Nice raffle prize Spencer!  There seems to be quite a lot of choice in 3D
printers these days.  This one bills the technology as "Fused Filament
Fabrication" but that seems to be marketing-speak for one of the three
basic processes, Fused Deposition Modeling (FDM) process.  If the raw
material is a spool of "fishing line" then it's basically FDM.  That
technology is nice because it's inexpensive.  It does have the drawback of
having finite layers as it builds the model, and they can tend to
delaminate if you try to use the part in the real world (depending on the
stresses and directions) and the precision, while generally quite good,
doesn't match the fancier and pricier SLA and SLS technologies.  They do
keep pushing forward with material choices for all of these machines.  When
I first had FDM parts made, over 10 years ago, it was pretty much either
ABS or PC, period.

SO


On Wed, Mar 20, 2019 at 3:40 PM Spencer Yost <spencer at rdfarms.com> wrote:

> I have a Lulzbot  Taz6  3-D printer. It’s a fairly nice 3-D printer, and I
> have experimented a lot with it(won it at a professional raffle).  As
> Steve says choices of flexible materials are limited and expensive and are
> not generally “seal-like”.
>
> I did make a part for a magneto for Brice. Not sure if he ever used it.
> He needed something non-conductive and otherwise made out of unobtanium so
> 3d printing fit the bill.
>
> Right now I see the most common advantage is for making molds for casts,
> prototypes for parts that will ultimately be manufactured using other
> materials and processes,  and dinosaurs for your grandson :-)
>
> https://www.lulzbot.com/store/printers/lulzbot-taz-6
>
> Stuff you can make:
>
> https://www.thingiverse.com/
>
>
> Spencer Yost
>
> On Mar 20, 2019, at 2:09 PM, Stephen Offiler <soffiler at gmail.com> wrote:
>
> EXACTLY right Henry.  I work in manufacturing, and I can talk all day long
> about the tradeoffs with different manufacturing processes depending on how
> many parts you will ultimately need to make.  The option of 3D printing,
> when appropriate, is probably going to be "cost-effective" (might not look
> that way to the consumer)  if you need a very small number, versus any
> other strategy where you need serious investment in some kind of
> mold/tooling.  On a related note, I have heard that Jay Leno has gotten
> into 3D printing rather seriously, and now can make nearly any part for any
> antique car that is being restored in his shop.  While there is such a
> thing as 3D printing of metals, that technology is still young and wildly
> expensive and focused largely on exotic materials.  But you can make
> so-called "patterns" with 3D plastic or wax printing, and make casting
> molds from the patterns, and make cast metal parts quite easily.
>
> SO
>
>
> On Wed, Mar 20, 2019 at 1:05 PM Henry Miller <hank at millerfarm.com> wrote:
>
>> John deere had an internal story about doing this a few years ago. As I
>> recall a part that would have been $20 in quantity costs $450 by 3d
>> printing and the profit is less. Still for a one off part it is the easiest
>> option. The 20 dollar part needs an expensive mold that was lost years ago.
>>
>> --
>>   Henry Miller
>>   hank at millerfarm.com
>>
>>
>>
>> On Wed, Mar 20, 2019, at 11:05 AM, James Peck wrote:
>>
>> Could this be used to produce seals for 8Ns?
>>
>>
>> https://www.constructionequipment.com/cnh-3d-prints-spare-parts?eid=216501888&bid=2398207
>>
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