I still make items products that I will use myself. But if I see something that I won't use, can do a good job and fill the gap in the market... and the numbers make business sense, I'II consider it. I'm still more hobby orientated than focused on a product line. However life balance is really important for me and would rather generate income from what I want to do, than be greedy and stuck working on the same product line.
Just in time manufacturing goes out the window when suppliers can no longer guarantee lead times. I'm currently ordering components 4 to 5 months ahead of production, and failing to obtain all the components in time. Last year, I ordered an Infineon part, $4/unit, reel of 1000. Because of the high cost and low volume application, I based 3 products on the use of this part. They had it in stock, 2 week lead time. Ordered. It never arrived. Apparently the parts allocated to me was bumped by a more important automotive customer. I'd invested nearly 3 months development work into the products and couldn't re-coupe funds. I had all the other components sitting on the shelf waiting for production... cashflow tied up in stock, on the shelf. It took just on 5 months to squeeze 100 paid for samples from infineon, which they charged twice the cost for. Lead time have been a bugger since the financial crisis. For main products, I've gone to building production quantities to last 18 months and ordering parts 4 to 5 months ahead of production. This last production run has caught me out, as two of the components are late... 17 weeks lead time. I'II run out of stock, which is very bad for business. I have had to re-design a PCB to accommodate a QFN micro, as the leadtime on the TSSOP was too long. It makes it quite hard for small operators, as one part missing from the production BOM can play havoc with cashflow. One of my suppliers has been quite good by holding ordered stock in their inventory and releasing on a set date... so parts are invoiced at the tail end of the 4..5 months, rather than having to hold paid for stock on the shelf for the whole period. I tend to commonise on components where ever possible, and in some cases the decision to make a product can be because I have the stock already - quick turn around.
I still make items products that I will use myself. But if I see something that I won't use, can do a good job and fill the gap in the market... and the numbers make business sense, I'II consider it. I'm still more hobby orientated than focused on a product line. However life balance is really important for me and would rather generate income from what I want to do, than be greedy and stuck working on the same product line.
Just in time manufacturing goes out the window when suppliers can no longer guarantee lead times. I'm currently ordering components 4 to 5 months ahead of production, and failing to obtain all the components in time. Last year, I ordered an Infineon part, $4/unit, reel of 1000. Because of the high cost and low volume application, I based 3 products on the use of this part. They had it in stock, 2 week lead time. Ordered. It never arrived. Apparently the parts allocated to me was bumped by a more important automotive customer. I'd invested nearly 3 months development work into the products and couldn't re-coupe funds. I had all the other components sitting on the shelf waiting for production... cashflow tied up in stock, on the shelf. It took just on 5 months to squeeze 100 paid for samples from infineon, which they charged twice the cost for. Lead time have been a bugger since the financial crisis. For main products, I've gone to building production quantities to last 18 months and ordering parts 4 to 5 months ahead of production. This last production run has caught me out, as two of the components are late... 17 weeks lead time. I'II run out of stock, which is very bad for business. I have had to re-design a PCB to accommodate a QFN micro, as the leadtime on the TSSOP was too long. It makes it quite hard for small operators, as one part missing from the production BOM can play havoc with cashflow. One of my suppliers has been quite good by holding ordered stock in their inventory and releasing on a set date... so parts are invoiced at the tail end of the 4..5 months, rather than having to hold paid for stock on the shelf for the whole period. I tend to commonise on components where ever possible, and in some cases the decision to make a product can be because I have the stock already - quick turn around.