My experiences and choices are a mixed bag of success and failure. Like everyone else, I had effectively 4 major choices.
Like me. And i'm sure that it
took some effort1. Buy a new, low-cost desktop unit with fairly known limitations. Struggling will large numbers of unique parts, small parts, fine pitch parts, etc.
2. Buy a second-hand past-its-prime used system from a dealer as a complete and supported package - there are many to choose from. These generally have documentation, training, support, and arrive in a ready to run condition - but the cost is 5x-10x the entry-level desktop (at least)
3. Buy a second-hand machine from a random clearance company on eBay for very little money and you are on your own. This is what I did, knowing it would be a project, but unknown how big the project would be.
4. Buy a brand new machine from a commercial manufacturer where you can really even get an email returned if you don't have $150k and most of them will clear $200k with feeders.
I'm thinking there might be some 1a and 1b options.. SmallSMT's high end machiens probaby are a 1b option, being a better desktop than most.
a 3b option was i bought it at auction. I did know it worked when it was last turned on, as some of the staff were on this very forum! I admit this was a lucky purchase.
a 3c option is to find a good 'big market' refurb shop, ( like ksunsmt ) in China or India. There are so many machines there. You'll probalby want to take a trip over there to go and sus it out. And this is not an ideal option if you have no expereince in SMT. You just wont' know what your looking for. However you migth be able to find someone to help you.
So, my machine started as a $5k purchase on eBay. It needed many months of repairs, learning, calibration along with perhaps another $4k in pieces and parts.
I cannot say how much time I spent directly dealing with machine issues and how much time was dedicated generically to the PCB assembly process. I was learning everything all at once. I have spent just over $11k now and have about 300 feeders and a machine that can hold a TON of parts and place big, small, and fine pitch all day. There are really no part restrictions.
Yeah, i have a similar story. Today there are 127 parts on the machines, and i have around 250 feeders in total. I had some experience with PNP previously. I'm placing parts down to 402 and .4mm pitch. I've got a great supplier for the misc parts that you need.. ( nozzles, belts, shafts, grease, sensors, acutators and solenoids.. ).. I know where i can get replacment parts. All that being said, these won't last forever, and I am working on a plan for the future. Its catapulted me way forward. Having two machines is a bit reassuring. If one did die, i probably could make most of my products with just one, while i got the 2nd up and running again. It would be painful and a LOT of work.
It took a LOT of my time, but if I had to estimate less than half of that was dedicated to my machine - it was spent just learning the basics of SMT assembly. That part of the learning curve will exist regardless of what hardware you have.
My big ticket item on time was developing our parts system. Thats been key to being about to be super organised, and being able to swap over jobs with just a few feeder changes.
It was a good way to have a big capability with only a small budget, but it ate up some nights, weekends, and holidays in the process.
Sometimes i need to run 2000 - 5000 units, they woudl be panelised 10 up or so, and this would just take way too long on a desktop machine. I did'tn start out needing to do that, but its grown up that way.
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If my machine died tomorrow....I would at least look at machines like SMALL SMT if they can reliably place 0402 passives. But I would need 3 of them to get the mix needed.
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If my machines died tommorrow, and i coud'nt get them back up and running, i'd be on a plane to Dongguang to go and find a couple more. :-)
This is an interesting topic, but not OT for the post, we shoudl continue it welsewhere.