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  • How to Make a Professional Printed Circuit Board: the Complete Guide

    Hello!Thanks for telling us all about this. It is a very valuable contribution to home electronics fans. I wish I knew about it decades ago!

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  • How to Make a Professional Printed Circuit Board: the Complete Guide

    Can you describe how to achieve plated through holes (vias), which would be the remaining step to professional boards? Actually, multilayer boards would be closer to professional for advanced products like fast analog to digital converters and some other kinds of jobs like complex digital circuits but beyond 2 sides probably should be left to profesional manufacturers.

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  • Laser Printed PCB's, Perfect and Easy.

    To KISELIN explicitly; I am baffled again; I am not complaining about anything. One previous comment was from someone who wished to be able to order a PCB and I was offering help to that person and any others who thought ordering made more sense than the effort and chemical problems of a "do it yourself" method. That is a reasonable choice in various kinds of situations, for instance, a lack of total time so pay rather than devote a few hours to the production and clean-up of a DIY job. Also, there are situations in which quality of the DIY method is a bit inadequate, such as very accurate traces for microwave jobs or very closely placed traces when using tiny SMD components. As an example, I consider a commercial supplier because I plan a job at 20 GHz where some gold-pl...

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    To KISELIN explicitly; I am baffled again; I am not complaining about anything. One previous comment was from someone who wished to be able to order a PCB and I was offering help to that person and any others who thought ordering made more sense than the effort and chemical problems of a "do it yourself" method. That is a reasonable choice in various kinds of situations, for instance, a lack of total time so pay rather than devote a few hours to the production and clean-up of a DIY job. Also, there are situations in which quality of the DIY method is a bit inadequate, such as very accurate traces for microwave jobs or very closely placed traces when using tiny SMD components. As an example, I consider a commercial supplier because I plan a job at 20 GHz where some gold-plated pads are needed for wire-bonded parts. The investment in DIY makes no sense although I am making my own PCBs when no gold is demanded, including with SMD parts. It is a matter of choosing the optimum solution for the specific circumstances plus trying to help others achieve their choice of solution.

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  • Laser Printed PCB's, Perfect and Easy.

    You do not tell us where you are but in Germany we have services for this and I am sure you will find them in the USA as well and I have seen ads from people in the UK. An Internet search should find a service near you. On a broader scale, I have seen offers of such service from China which might be slow to deliver unless you order high cost shipping. ebay carries at least one listing for this but I suspect serious effort will find you more. You must supply the design in some standard format as produced by common and often free (for small PCBs and non-commercial applications) software. The company in China sells at quite moderate prices and the other suppliers I have looked at sell at acceptable prices with some valuable options like plated-through holes and gold plating where y...

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    You do not tell us where you are but in Germany we have services for this and I am sure you will find them in the USA as well and I have seen ads from people in the UK. An Internet search should find a service near you. On a broader scale, I have seen offers of such service from China which might be slow to deliver unless you order high cost shipping. ebay carries at least one listing for this but I suspect serious effort will find you more. You must supply the design in some standard format as produced by common and often free (for small PCBs and non-commercial applications) software. The company in China sells at quite moderate prices and the other suppliers I have looked at sell at acceptable prices with some valuable options like plated-through holes and gold plating where you need these features (you can do them at home but they are much harder than just etching a PCB). On account of a certain amount of risk of an unexpected risk of a mistake, DIY solutions do go faster if you can master them. Design it today and etch it tomorrow morning and stuff it in the afternoon". If you depend on USPS I doubt you can equal that timing with a commercial supplier.

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  • Usually Baffled commented on keebie81's instructable My Ray Gun From Found Objects1 year ago
    My Ray Gun From Found Objects

    One additional precaution, bad enough so would not use a normal tube this way. These tubes have a vacuum inside and when the glass breaks it implodes, that is, the glass parts fly toward the center but then sometimes pass the center and fly outward at high velocity or alternatively collide with other stuff (that big electrode) break into smaller pieces which then come out at pretty high speed. However they are generated, these can damage at least to eyes and maybe also skin depending on luck and other details. In laboratory environments experiments are often done either with protective containers for large, evacuated, glass vessels or in metal vessels which (if improperly designed) collapse but without the shrapnel. One alternative would be a strong plastic coating able to hold ...

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    One additional precaution, bad enough so would not use a normal tube this way. These tubes have a vacuum inside and when the glass breaks it implodes, that is, the glass parts fly toward the center but then sometimes pass the center and fly outward at high velocity or alternatively collide with other stuff (that big electrode) break into smaller pieces which then come out at pretty high speed. However they are generated, these can damage at least to eyes and maybe also skin depending on luck and other details. In laboratory environments experiments are often done either with protective containers for large, evacuated, glass vessels or in metal vessels which (if improperly designed) collapse but without the shrapnel. One alternative would be a strong plastic coating able to hold back the glass but for a user lacking the skills to produce a suitable coating, it is better to go to safer decoration.

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