Hi,
I agree with Blair that there is a good case for equipment that is used at
less than 100% of its level.
A perfect example is the need for a "Near By Printer" in an office. Yes, we
could walk down the hall but that is such a pain! :-)
Saving a couple days here and there, avoiding the communicating of
instructions via email, seeing the process and the chance to catch errors.
These can add up to serious money.
But it also assumes the user can wear many hats and run all the processes.
I did a lot of work setting up a proto type only company and wow did it work
out well. But it was a LOT of special software.
People cost a lot of money. Sometime machines can reduce the number of
people or shorten schedules.
Add up the costs, compare the benefits. It may or may not be a smart move.
Bob K.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Blair Hogg
Sent: Saturday, January 22, 2011 5:17 PM
To: [log in to unmask]
Subject: Re: [TN] Suppose for a moment...
I can see the benefit - you can run the product as soon as you have all of
the parts. You don't have to wait your turn in the assembly shop's queue.
I think you can get reasonably priced equipment and set up your own line if
you aren't concerned about high throughput, or, if you run a lot of small
production runs, you can get decent equipment, work on your changeover
practices, and get some decent efficiency from your line.
Either way you can run what you want to run when you want to run it.
Sure, some equipment is expensive and necessary, e.g., X-ray inspection for
BGAs, or perhaps you can find a local assembly house that will let you rent
time on their equipment, work on getting a robust process, and then
outsource the inspection/rework when necessary.
Blair
On Sat, 22 Jan 2011 16:18:48 +0000, John Goulet <[log in to unmask]>
wrote:
>I cannot see any benefits in soldering your own assemblies in-house for
prototype build only.
>
<snip>
>
>John Goulet
>
>MFG/Process Engineer
>----- Original Message -----
>From: "Chris Knudsen" <[log in to unmask]>
>To: [log in to unmask]
>Sent: Friday, January 21, 2011 10:05:52 AM
>Subject: [TN] Suppose for a moment...
>
>...you work for a small, albeit successful OEM. You produce
>short-run, custom electronics. A 'production run' may be 10-50 units.
>
>_Everything_ is a prototype.
>
>Suppose you have this potentially irrational desire to solder all your
>pcb's in-house.
>
>Assuming:
>-- Dealing with component placement and paste/screening is not an issue.
>-- You tend to (sadly) avoid challenging chip packages. However, due
>to availability of the more colorful components, this becomes more
>difficult every year.
>-- The economics are "manageable".
>-- Inspection and QA are in place.
>-- Damn the torpedoes.
>
>**What type of low-volume soldering solutions would you recommend?
>
>I've tested one name-brand, IR convection, batch, reflow-oven and found
>unacceptable hot/cold spots (manufacturer will go unnamed).
>
>**Is Vapor-phase on this scale an option?
>
>**Typical hardware costs/concerns/safety issues?
>
>**Required infrastructure?
>
>Any suggestions from technet-nation would be most appreciated.
>
>Offline responses would be fine (especially if naming names).
>However, perhaps others may benefit from from your experience and
recommendations.
>
>Best regards to all,
>
>Chris Knudsen
>New England Research, Inc.
>
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