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Thread
'[OT] plastic box mfgs'
2010\01\12@183126
by
alan smith
anyone have a compiled list of plastic box vendors. I know pactec and bud, but others?
2010\01\12@183344
by
Chris Smolinski
I use Serpac stuff a bit. There's also Hammond.
>anyone have a compiled list of plastic box vendors. I know pactec
>and bud, but others?
>
--
---
Chris Smolinski
Black Cat Systems
http://www.blackcatsystems.com
2010\01\12@184357
by
Matt Pobursky
I've used all the others mentioned, plus TEKO and OKW.
Matt Pobursky
Maximum Performance Systems
On Tue, 12 Jan 2010 18:33:06 -0500, Chris Smolinski wrote:
{Quote hidden}> I use Serpac stuff a bit. There's also Hammond.
>
>> anyone have a compiled list of plastic box vendors. I know pactec and
>> bud, but others?
>>
>
> --
>
> ---
> Chris Smolinski
> Black Cat Systems
>
http://www.blackcatsystems.com
2010\01\12@190035
by
Philip Pemberton
alan smith wrote:
> anyone have a compiled list of plastic box vendors. I know pactec and bud, but others?
Hammond (who also make some pretty sweet looking aluminium cases)
Vero
Boss Industrial Mouldings (BIMBOX series -- do they still make those?)
Teko
... and now my mind is drawing blanks. A bit of Google-Fu should help
you find more names -- try "plastic equipment box" or "plastic
enclosures" for starters.
--
Phil.
spam_OUTpiclistTakeThisOuT
philpem.me.uk
http://www.philpem.me.uk/
2010\01\12@190455
by
Dave Tweed
alan smith wrote:
> anyone have a compiled list of plastic box vendors.
> I know pactec and bud, but others?
Polycase
-- Dave Tweed
2010\01\13@082418
by
M.L.
-Polycase: Inexpensive, quality seems a little lower than others but
I'm sure it's good enough.
-OKW: Their minitec cases are very nice in quality and variety of
sizes and colors
-Pactec: I have a couple pactec FXT series cases here, they seem to
have nice features and are very rugged.
-Serpac: Only sell in low quantity through Digikey (thus pricey) but
they are the only Mfg. I've found with an integrated "AA" battery
holder. (P/N H-65,AA)
I look forward to hearing others' experiences as well. It's not easy
evaluating enclosures.
--
Martin K.
2010\01\13@124702
by
Chris Smolinski
>-Serpac: Only sell in low quantity through Digikey (thus pricey) but
>they are the only Mfg. I've found with an integrated "AA" battery
>holder. (P/N H-65,AA)
They sell through Mouser also - prices generally less than DigiKey
(but then Mouser is almost always less than DigiKey)
--
---
Chris Smolinski
Black Cat Systems
http://www.blackcatsystems.com
2010\01\14@140140
by
M. Adam Davis
2010\01\14@191846
by
Funny NYPD
2010\01\14@204744
by
M.L.
|
Any medium size city has a plastics house near it. Universal Plastics
in Holyoke, MA does thermoforming which is cheaper in tooling than
injection molding but limited to certain styles - and higher in unit
cost.
Almost all of the plastic cases you see are injection molded where the
tooling starts at around $10k and goes astronomically upward from
there. This is why you see most people struggling to find an
off-the-shelf case that will work for their application.
Even spending $10 to have a case machined is going to be a better deal
(up to a point...) than paying a mech. e. to design your case and then
spend $25k for the injection tooling.
I know a guy in upstate NY who owns an injection molding place if
you're interested.
-
Martin K
On Thu, Jan 14, 2010 at 7:18 PM, Funny NYPD <funnynypd
spam_OUTyahoo.com> wrote:
> Good job. Thanks for your time and contribution.
> By the way, anyone know a good low cost plastic box mfgs who delievers molded (special made) enclosure (starting qty 1k) in North American. So far, all suppliers I found are from Far East.
>
2010\01\14@214052
by
Funny NYPD
|
The price is a killer.
If my memory wasn't wrong, I am curious how far-east factory can make it so fast, so cheap but with a decent quality.
Here is what I have learned from one of my clients in CT:
A custom made mold and sample in own factory at CT USA: time: 7 weeks after CAD drawing is done. All in-house. Internal cost/quote: US$7K-15K;
>From a Factory in Guangdong China: time: quoted 7 days after CAD drawing send out via email, samples were actually delivered in the 5th business day to CT USA. cost: <US$3K; Quality are good. volume is about 1K/first year, 3~5K/2nd year, 30K maximum. Unit price (including shipping) after model cost is about 1/10 of in-house made price. And that quantity doesn't sounds a lot to me.
I met the gentleman from New York city, who cooperates my clients and the factory in China. He visited the factory who made the mold and enclosures. and I was told all he saw were modern equipment, nice building, well-trained staff.
Is outsource the only way to get custom designed enclosure/box done in a reasonable price?
Can Mexico be a good alternative instead of sending orders out of this continent?
Funny N.
Au Group Electronics, http://www.AuElectronics.com
http://www.AuElectronics.com/products
http://augroups.blogspot.com/
________________________________
From: M.L. <@spam@mKILLspam
lkeng.net>
To: Microcontroller discussion list - Public. <KILLspampiclistKILLspam
mit.edu>
Sent: Thu, January 14, 2010 8:46:59 PM
Subject: Re: [OT] plastic box mfgs
Any medium size city has a plastics house near it. Universal Plastics
in Holyoke, MA does thermoforming which is cheaper in tooling than
injection molding but limited to certain styles - and higher in unit
cost.
Almost all of the plastic cases you see are injection molded where the
tooling starts at around $10k and goes astronomically upward from
there. This is why you see most people struggling to find an
off-the-shelf case that will work for their application.
Even spending $10 to have a case machined is going to be a better deal
(up to a point...) than paying a mech. e. to design your case and then
spend $25k for the injection tooling.
I know a guy in upstate NY who owns an injection molding place if
you're interested.
-
Martin K
On Thu, Jan 14, 2010 at 7:18 PM, Funny NYPD <RemoveMEfunnynypdTakeThisOuT
yahoo.com> wrote:
> Good job. Thanks for your time and contribution.
> By the way, anyone know a good low cost plastic box mfgs who delievers molded (special made) enclosure (starting qty 1k) in North American. So far, all suppliers I found are from Far East.
>
2010\01\15@103901
by
M. Adam Davis
On Thu, Jan 14, 2010 at 9:40 PM, Funny NYPD <spamBeGonefunnynypdspamBeGone
yahoo.com> wrote:
> Is outsource the only way to get custom designed enclosure/box done in a reasonable price?
For some values of "reasonable" :-D
Molding is a labor intensive process, so it's going to be cheapest
wherever labor is cheaper.
You might check with http://protomold.com - they specialize in low
quantity, low cost, quick turn injection molding, and for simple
pieces start out at around $1,500. They also are associated with (or
related to?) another company that does quick turn plastic cnc
machining for very low quantities.
But if that's not a "reasonable price" then it's unlikely that you'll
find a reasonable price in the US, and possibly not even in Mexico.
-Adam
2010\01\15@105635
by
Alan B. Pearce
>-Serpac: Only sell in low quantity through Digikey
>(thus pricey) but they are the only Mfg. I've found
>with an integrated "AA" battery holder. (P/N H-65,AA)
Not sure where you are looking, but OKW in the UK do ones with battery
compartments that will take a pair of AA or a PP3. See
http://www.okw.co.uk/enclosures/handheld_enclosures.htm and look for the
ones that include 'battery compartment' in the title.
There some nicely shaped enclosures in this range.
2010\01\15@122404
by
Vitaliy
|
Funny NYPD wrote:
{Quote hidden}> The price is a killer.
> If my memory wasn't wrong, I am curious how far-east factory can make it
> so fast, so cheap but with a decent quality.
>
> Here is what I have learned from one of my clients in CT:
> A custom made mold and sample in own factory at CT USA: time: 7 weeks
> after CAD drawing is done. All in-house. Internal cost/quote: US$7K-15K;
>>From a Factory in Guangdong China: time: quoted 7 days after CAD drawing
>>send out via email, samples were actually delivered in the 5th business
>>day to CT USA. cost: <US$3K; Quality are good. volume is about 1K/first
>>year, 3~5K/2nd year, 30K maximum. Unit price (including shipping) after
>>model cost is about 1/10 of in-house made price. And that quantity doesn't
>>sounds a lot to me.
>
> I met the gentleman from New York city, who cooperates my clients and the
> factory in China. He visited the factory who made the mold and enclosures.
> and I was told all he saw were modern equipment, nice building,
> well-trained staff.
>
> Is outsource the only way to get custom designed enclosure/box done in a
> reasonable price?
> Can Mexico be a good alternative instead of sending orders out of this
> continent?
If you can get a quick turnaround at a decent price, who cares whether you
buy the enclosures in China or in the US?
I believe the way they can achieve quick turnarounds is by building a
prototype mold out of aluminum. Its lifetime is limited, but it's much
faster to build than a hardened steel mold.
Often times for shorter runs they would then go to soft steel, and then
finally to hard steel.
Vitaliy
2010\01\15@232019
by
PICdude
Quoting Vitaliy <TakeThisOuTpiclistEraseME
spam_OUTmaksimov.org>:
> ...
> I believe the way they can achieve quick turnarounds is by building a
> prototype mold out of aluminum. Its lifetime is limited, but it's much
> faster to build than a hardened steel mold.
> ...
There are apparently epoxy molds also at an even lower cost.
I've missed a bunch of this thread, but it seems that the box-sourcing
adventure turned into a custom-box requirememt. If so, don't forget
that for short runs many plastics can be CNC machined (I do that), and
then there's also 3D printing.
Cheers,
-Neil.
2010\01\15@234631
by
Vitaliy
PICdude wrote:
> There are apparently epoxy molds also at an even lower cost.
Really? How is that even possible?
2010\01\15@235627
by
PICdude
2010\01\16@020135
by
Jonathan Hallameyer
On Fri, Jan 15, 2010 at 11:44 PM, Vitaliy <piclistEraseME
.....maksimov.org> wrote:
> PICdude wrote:
> > There are apparently epoxy molds also at an even lower cost.
>
> Really? How is that even possible?
>
>
> -
2010\01\16@050849
by
Ruben Jönsson
> Not sure where you are looking, but OKW in the UK do ones with battery
> compartments that will take a pair of AA or a PP3. See
> http://www.okw.co.uk/enclosures/handheld_enclosures.htm and look for the
> ones that include 'battery compartment' in the title.
>
> There some nicely shaped enclosures in this range.
>
I have used a DATEC-CONTROL type with a battery compartment for 2 AA batteries
in one of our products.
<http://www.liroselectronic.com/gw/grainwatch_eng.html>
Scroll down to Hand-Held instrument.
/Ruben
==============================
Ruben Jönsson
AB Liros Electronic
Box 9124, 200 39 Malmö, Sweden
TEL INT +46 40142078
FAX INT +46 40947388
EraseMEruben
pp.sbbs.se
==============================
2010\01\16@094156
by
Richard Pytelewski
A number of short run vacuum formed molds are made of wood and the plastic
is "sucked into" the cavity or form of softened plastic sheet.....
Rich
-----Original Message-----
From: RemoveMEpiclist-bouncesEraseME
EraseMEmit.edu [RemoveMEpiclist-bouncesspam_OUT
KILLspammit.edu] On Behalf Of
Vitaliy
Sent: Friday, January 15, 2010 11:45 PM
To: Microcontroller discussion list - Public.
Subject: Re: [OT] plastic box mfgs
PICdude wrote:
> There are apparently epoxy molds also at an even lower cost.
Really? How is that even possible?
2010\01\16@100331
by
M.L.
On Fri, Jan 15, 2010 at 11:44 PM, Vitaliy <RemoveMEpiclistTakeThisOuT
spammaksimov.org> wrote:
> PICdude wrote:
>> There are apparently epoxy molds also at an even lower cost.
>
> Really? How is that even possible?
>
>
Use a 3D printer to make a positive.
Use the positive to make a silicone (or latex?) negative.
Poor epoxy into the negative.
That's the basic idea as I understand it.
--
Martin K.
2010\01\16@100546
by
M.L.
On Fri, Jan 15, 2010 at 12:22 PM, Vitaliy <EraseMEpiclistspam
spamBeGonemaksimov.org> wrote:
> I believe the way they can achieve quick turnarounds is by building a
> prototype mold out of aluminum. Its lifetime is limited, but it's much
> faster to build than a hardened steel mold.
>
> Often times for shorter runs they would then go to soft steel, and then
> finally to hard steel.
>
An aluminum mold is still in the very expensive category, where steel
is in the extremely expensive category. An aluminum mold should still
be able to do many thousand injections.
--
Martin K.
2010\01\16@120253
by
William Bross
Vitaliy wrote:
>PICdude wrote:
>
>
>>There are apparently epoxy molds also at an even lower cost.
>>
>>
>
>Really? How is that even possible?
>
>
>
Here's a hobbyist link to the process.
<http://www.injectionmolder.net/epoxy%20molds-step_%20by_%20step.htm>
I've used professional injection mold houses for quantities in the hundreds using epoxy molds for short run stuff.
Bill
2010\01\17@020042
by
Vitaliy
M.L. wrote:
> An aluminum mold is still in the very expensive category
What makes you say so? We didn't make aluminum molds, but we had a local
machine shop fabricate a custom piece made out of aluminum, which had many
of the features you would find in a mold. It only cost a coupld of hundred
bucks
Vitaliy
2010\01\17@020414
by
Vitaliy
William Bross wrote:
>>>There are apparently epoxy molds also at an even lower cost.
>>>
>>>
>>
>>Really? How is that even possible?
>>
>>
>>
> Here's a hobbyist link to the process.
>
> <http://www.injectionmolder.net/epoxy%20molds-step_%20by_%20step.htm>
>
> I've used professional injection mold houses for quantities in the
> hundreds using epoxy molds for short run stuff.
VERY cool!
Vitaliy
2010\01\17@100244
by
M.L.
On Sun, Jan 17, 2010 at 1:59 AM, Vitaliy <RemoveMEpiclistKILLspam
maksimov.org> wrote:
> M.L. wrote:
>> An aluminum mold is still in the very expensive category
>
> What makes you say so? We didn't make aluminum molds, but we had a local
> machine shop fabricate a custom piece made out of aluminum, which had many
> of the features you would find in a mold. It only cost a coupld of hundred
> bucks
>
> Vitaliy
>
I've been through the process of getting a plastic enclosure made. We
wanted to do an injection molded part but the tooling was going to be
expensive, even with a cheaper aluminum mold. It depends on the size
of the object, but it was going to be many thousand. Maybe you can get
tooling made by a third party but I doubt most plastics places would
be willing to use third-party tools. They don't make much money off of
the impressions.
--
Martin K.
2010\01\17@102603
by
PICdude
|
Quoting "M.L." <mSTOPspam
spam_OUTlkeng.net>:
> I've been through the process of getting a plastic enclosure made. We
> wanted to do an injection molded part but the tooling was going to be
> expensive, even with a cheaper aluminum mold. It depends on the size
> of the object, but it was going to be many thousand. Maybe you can get
> tooling made by a third party but I doubt most plastics places would
> be willing to use third-party tools. They don't make much money off of
> the impressions.
>
>
> --
> Martin K.
> --
Mold prices will depend heavily on the shape of the part you want to
make. The lowest cost will be a part that can be made with no
machining on one half of the mold. Complex parts will need to have
both sides machined and other inserts (from the sides, etc).
Sometimes the parts may need to be made in a few molds and joined
afterwards. Allowable draft angles make a big difference too.
FWIW, last year I had found an injection-molding company who said they
have generic "blanks" (2-pc mold blocks) made cheaply in China, but
then they just machine the part features here in the U.S.,
significantly reducing the mold cost. Wish I could remember who that
was though.
Cheers,
-Neil.
2010\01\17@103229
by
PICdude
2010\01\17@145840
by
Spehro Pefhany
|
At 10:25 AM 1/17/2010, you wrote:
{Quote hidden}>Quoting "M.L." <
KILLspammspamBeGone
lkeng.net>:
>
> > I've been through the process of getting a plastic enclosure made. We
> > wanted to do an injection molded part but the tooling was going to be
> > expensive, even with a cheaper aluminum mold. It depends on the size
> > of the object, but it was going to be many thousand. Maybe you can get
> > tooling made by a third party but I doubt most plastics places would
> > be willing to use third-party tools. They don't make much money off of
> > the impressions.
> >
> >
> > --
> > Martin K.
> > --
>
>
>Mold prices will depend heavily on the shape of the part you want to
>make. The lowest cost will be a part that can be made with no
>machining on one half of the mold. Complex parts will need to have
>both sides machined and other inserts (from the sides, etc).
>Sometimes the parts may need to be made in a few molds and joined
>afterwards. Allowable draft angles make a big difference too.
Usually, for something that's a commercial volume product, we're
looking at a set of molds. Typically the molds will include many
moving parts (slides and other 'side actions'). All these features
are important if you want to have anything much beyond a cup topology
with holes perpendicular to the parting line. If the part is at all
deep you need cooling features within the male part of the mold or
the part will take very long cycle times (a sort of water fountain
up inside the male bit). Snaps, unscrewing etc. adds mechanical
complexity and moving parts so that the molded part can be
removed from the mold (slides, collapsing cores etc.).
Here's a link to a relatively simple single-cavity mold which I
designed for 10K-100K part quantity:
http://www.trexon.com/spehro_pefhany_housing_mold.jpg
It's roughly a 10" cube (designed to fit between the
tie bars on a Battenfeld BA200 molding machine, but any larger
machine should be able to run it). The actual cavity is inside
the two facing green/grey disk-shaped inserts- the part is only about
2-1/2" in
diameter and < 1" deep, with a few hollow posts and some snaps.
You can see alignment and O-ring features (water flows all
through each half of the mold- on three plates) on each part.
The male 'core' part has three flexible sliding/bending parts to avoid having
radial side action. You can see the three adjustments down
near the ejector plate. Half of the snap profile is machined
into the ends. Since it's a low quantity mold, it has just a single
cavity and I've designed in a hot sprue bushing (the blue part
just below the red locating ring), which is a single cavity
version of a hot runner subsystem (the electrical connector is
for the thermocouple and heater). I've used tubular dowels to
keep the size down. You can see the leader pins and return pins.
There are two tapered interlocks to provide fine alignment (the
slop in the leader pins is too big relative to the wall thickness
that crosses the parting line to be able to do without). There are
three parallel-fed "bubblers" to provide cooling in the male part
of the mold, as well as a concentric cooling ring. Vents are
machined into the cavity surface to allow air to escape, as well
as through the ejector pins. This design requires no air or hydraulics
hookups to the mold, just cooling lines and electrical connection to the
"A" side.
Not bad for an EE, eh? Actually, mold design is a bit like PCB
layout, sort of 2-1/2 D layout. Some of the air/water lines to
multi-cavities can get a bit hairy. Eg. this 8-cavity mold
plate, which has (IIRC) 4 'layers' of horizontally drilled holes
so they can cross each other, be drilled from the sides, and miss
the holes for the cavity inserts.
http://www.trexon.com/lines.jpg
It's impossible come up with a well-designed plastic part unless
you understand a bit about polymer rheology and mold design. That's
why I got a postgraduate mold design certificate. ;-) Somehow managed
to get the President's letter (for highest marks) every term too.
There are some rules one can follow for part design- wall
thickness, minimum draft angle, part finish and such like. I can
recommend: _Plastic Part Design for Injection Molding_ as a good
introduction for the tyro part designer. Hanser Gardner has a bunch of
other good books too.
http://tinyurl.com/ycmoa63 (kickback if ordered from here)
>FWIW, last year I had found an injection-molding company who said they
>have generic "blanks" (2-pc mold blocks) made cheaply in China, but
>then they just machine the part features here in the U.S.,
>significantly reducing the mold cost. Wish I could remember who that
>was though.
Yeah, mold bases are a lot cheaper overseas. They don't even have
to be all that good. The hardened parts are in the inserts unless
you have the cavities machined directly into the mold plates, which
is rare. So even if they're soft, have inclusions in the steel or are
otherwise marginal, it won't make so much difference. It's not uncommon
for overseas *molds* to require expensive rework though. Lots of horror
stories...
Best regards,
Spehro Pefhany --"it's the network..." "The Journey is the reward"
EraseMEspeff
EraseMEinterlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
2010\01\18@082907
by
alan smith
Wow..I was traveling for a few days and didnt see the responses but the list came thru again! I found one from OKW that appears to be workable, for now.
Again, thanks for all the replies!
2010\01\18@091526
by
PICdude
Quoting alan smith <@spam@micro_eng2@spam@
spam_OUTyahoo.com>:
> Wow..I was traveling for a few days and didnt see the responses but
> the list came thru again! I found one from OKW that appears to be
> workable, for now.
>
> Again, thanks for all the replies!
>
I missed some of this thread, but it seems that it went from searching
for a COTS box to having something custom-made. I should add (for
anyone else) that there are solutions between those two options, as
(a) many of the enclosure manufacturers will custom-machine features
for you, and (b) you can always have some small pieces molded/machined
to add onto existing boxes as necessary.
Cheers,
-Neil.
2010\01\18@093004
by
alan smith
|
I ended up with a COTS for now, with some holes drilled in it. Its hard when the board is done and then you have to fit in an enclosure...it should be the other way around
--- On Mon, 1/18/10, PICdude <spamBeGonepicdude3
KILLspamnarwani.org> wrote:
{Quote hidden}> From: PICdude <
.....picdude3spam_OUT
narwani.org>
> Subject: Re: [OT] plastic box mfgs
> To:
TakeThisOuTpiclist.....
TakeThisOuTmit.edu
> Date: Monday, January 18, 2010, 6:14 AM
> Quoting alan smith <
TakeThisOuTmicro_eng2KILLspam
spamyahoo.com>:
>
> > Wow..I was traveling for a few days and didnt see the
> responses but
> > the list came thru again! I found one from OKW
> that appears to be
> > workable, for now.
> >
> > Again, thanks for all the replies!
> >
>
> I missed some of this thread, but it seems that it went
> from searching
> for a COTS box to having something custom-made. I
> should add (for
> anyone else) that there are solutions between those two
> options, as
> (a) many of the enclosure manufacturers will custom-machine
> features
> for you, and (b) you can always have some small pieces
> molded/machined
> to add onto existing boxes as necessary.
>
> Cheers,
> -Neil.
>
>
> -
2010\01\18@104151
by
Matt Pobursky
|
Indeed. If you are going to do something low volume and want to use a COTS
enclosure, you have to co-design the mechanicals along with the
electronics. Doing the packaging after the electronics always looks like a
hobbyist project someone did it in their basement.
I just finished a design that will build maybe 150 units/yr. and will go
into an aluminum extruded case from Lansing. I spent 2x the hours working
out the mechanicals/component selection and packaging vs. the electronic
design itself. It looks like a finished product though and the customer is
quite happy with it.
Matt Pobursky
Maximum Performance Systems
On Mon, 18 Jan 2010 06:29:34 -0800 (PST), alan smith wrote:
{Quote hidden}> I ended up with a COTS for now, with some holes drilled in it. Its hard
> when the board is done and then you have to fit in an enclosure...it
> should be the other way around
>
> --- On Mon, 1/18/10, PICdude <
.....picdude3
RemoveMEnarwani.org> wrote:
>
>> From: PICdude <
RemoveMEpicdude3
spamBeGonenarwani.org>
>> Subject: Re: [OT] plastic box mfgs
>> To:
spamBeGonepiclist@spam@
spam_OUTmit.edu
>> Date: Monday, January 18, 2010, 6:14 AM
>> Quoting alan smith <
TakeThisOuTmicro_eng2spam
yahoo.com>:
>>
>>> Wow..I was traveling for a few days and didnt see the
>>>
>> responses but
>>> the list came thru again! I found one from OKW
>>>
>> that appears to be
>>> workable, for now.
>>>
>>> Again, thanks for all the replies!
>>>
>>
>> I missed some of this thread, but it seems that it went from searching
>> for a COTS box to having something custom-made. I should add (for
>> anyone else) that there are solutions between those two options, as
>> (a) many of the enclosure manufacturers will custom-machine features
>> for you, and (b) you can always have some small pieces molded/machined
>> to add onto existing boxes as necessary.
>>
>> Cheers,
>> -Neil.
2010\01\19@194321
by
Forrest W Christian
Just to add my experiences to the thread:
I buy enclosures from two sources..
The enclosures shown at http://www.packetflux.com/images/revcsi.jpg come
from Envision Plastics at http://www.envplastics.com/ . This is a
*seriously* cool technology. Basically they are able to do custom
enclosures without molds or tooling. Essentially they apply
sheet-metal like processes to plastics. Make sure you look at their
sample enclosures on the website. In qty 250 these are costing me less
than $10 each.
I also have quite a few products which I use a polycase enclosure for.
If you can find a polycase enclosure which you can make your product fit
in, the customization for their products are dirt-cheap.
Generally I use polycase for those I can find a suitable enclosure for,
and envision plastics for everything else.
-forrest
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