The Basic Process of DIY PCB Fabrication

Designing a simple printed circuit board or PCB for your own personal use is not that difficult. Making one would require a bit more effort, but the process is still pretty easy to follow.

Unlike processes used by big PCB manufacturing companies, the DIY or do-it-yourself PCB fabrication procedure is more streamlined and the materials you will be using are available at your local hardware.

Pcb-FabricationThe first thing you have to consider when trying to create your own PCB is the etching process that you will be implementing. There are four common types of etching but for DIY PCB fabrication, two methods are recommended and they are acid and UV etching. The other two types, mechanical and laser etchings, are used in large-scale PCB fabrication as they require special devices and machines for them to be implemented properly.

After you have decided whether to use the acid or UV process, it is now time to proceed to making your own PCB. In the step-by-step procedure below, you can find how each process is used so will know how to do both.

Here is the basic process of DIYPCB fabrication:

1. Make the layout of your PCB circuit using computer-aided design (CAD) software. Gone are the days when creating a PCB design was drawn manually. These days, designing is simply done with a computer whose output can be printed accordingly.

2. Prepare a substrate board encrusted with a thin layer of copper on one side (for single-sided PCB) or on both sides (for double-sided PCB) depending on your design.

3. Wash the board with water to make sure that it is free of dirt and dust. Let it dry for a few minutes.

4. If you chose acid etching, print your CAD layout on glossy paper and place it on top of the substrate board. Make sure that you printed your design in the proper orientation as to not reverse your layout.

5. Iron the paper on the copper surface of the substrate board for a few minutes until it sticks firmly.

6. After that, dip the whole board with the joined paper design in hot water for at least 10 minutes. This will soften the paper so you can remove it easily.

7. Pick up the board from the water and gently peel the paper. You should be left with the substrate board imprinted with your PCB design.

8. The next step is dangerous so you should put on a pair of goggles and a face mask.

9. Pour the acid etchant in a large, deep, and non-corrosive container. The most acid used in this process is ferric chloride. Immerse the whole substrate board into the acid and mix every five minutes until all the unwanted copper is etched away.

10. When you see that it is done, lift up the board with plastic tongs and wash it immediately with running water for a few minutes. Make sure that no copper residue is left in the substrate for it to work better.

11. Smoothen it out with a fine sand paper for best quality.

12. If you chose the UV etching process, follow the acid etching process except that instead of using a clothes iron and ferric chloride for etching, simply place the joined printed design and copper-coated board into a UV etching chamber. Turn on the UV machine and set it to the indicated time before taking it out. You will see that your PCB is already perfectly etched afterward.

UV etching is simpler and easier but the actual UV machine may cost you a lot. Acid etching is still the most economical way of making PCB at home. One just have to be careful and wear the proper protective equipment when handling dangerous chemicals.

PCB fabrication is a multi-step process that is mostly carried by machines.The printed circuit boards are one of the most important components in the world of electronics today.

Designing Your Military Coins

military coinsWhether you already have a design in mind for your military coins or you want to copy an existing one, the talented and skilled graphic artists of custom coin manufacturers will be there to guide you through the design process. Following is the common process used in designing  coins

First Step: Send Your Files/Ideas

Most custom coin manufacturers use the PC as primary platform. Some will require special files or templates which limits your options. The better ones will accept drawings, scanned images, and image descriptions. Their artists and crafts men will turn your wonderful ideas into special and unique designs that will definitely meet your expectations and merit your approval. You can even send the files containing your designs or descriptions to their email addresses. The most commonly accepted are the following file extensions: 7z, doc, docx, eps, gif, jpeg, jpg, pdf, ping, ppt, pptx, psd, qti, rar, svg, tga, tif, txt, and zip.. You may also include any details and ideas that help with the design of your custom coins, and of course your contact information.

Second Step: Choose the Coin Shape

Good custom coins manufacturers use state of the art and unique mold processes to craft custom shapes with no additional cost to the customer. If you’re thinking of dog tags, stars, insignias, emblems, traditional circular designs, or bottle openers for the shape of your military coins, they’ve got it all covered for you. All custom coins start as round coins where the excess is cut away to make the shape according to your design. This is the reason why you get more real estate if you use a round design. But don’t worry. Custom shapes are usually free of charge.

Third Step: Choose the Metal Style

The metal style of your custom coins adds aesthetic value and can reflect the achievements of the individuals they will be presented to as well as the ideals of the group. The metal style choices are not limited to gold, silver, and copper. They also come in antique finish for that more traditional feel or polished for that added glimmer. Here are the common metal style options available:

–  Gold (comes in polished or antique finish)
–  Silver (comes in polished or antique finish)
–  Brass (comes in polished or antique finish)
–  Copper (comes in polished or antique finish)
–  Black Nickel
–  Duo Tone (Two metal styles of your choice)

Fourth Step: Choose Coin Options

After the design has been finalized and the shape and metal styles have been chosen, there are still a wide range of options that will add even more value to your custom military coins – from improving the look and feel to adding protection to the coins. You can choose from any of the following:

–  3D Designs
–  Bottle Openers
–  Coin Capsules
–  Coin Cutouts
–  Edge Designs
–  Engraved Text
–  Epoxy Coating
–  Keychain attachments
–  Offset Digital Printing
–  PVC Pouches
–  Sequential Numbering
–  Translucent Enamel
–  Velvet Bags
–  Velvet Boxes

That’s all there is to designing your custom military coins. For the production up to delivery, most custom coin manufacturers also use a simple four step process:

Step 1. They will send you a quote based on the design that has been agreed upon by following the design process.

Step 2. They will send you a proof design that you can review and assess if it meets your requirements.

Step 3. You will approve the design and the quoted price for manufacturing to commence.

Step 4. They will deliver your custom coins to your doorstep.

Simple Facts about a Mister

relief goesA mister is a machine that most people have probably seen in some large scale event. Outdoor gatherings, football games and other similar huge events are the typical places where people can find a mist fan.

Mist fans are often an enigma for a lot of people. Most people cannot even be bothered to understand how they work. For them, mist fans are just some huge fancy electric fan that blows a bit of water mixed with air.

Understanding how a mist fan works is not really that difficult. All a person needs is a little bit of information. Mist fans are basically electric fans that mix super tiny water droplets with air. The tiny water droplets evaporate because of the heat that they absorb from the environment. This is how a mister makes the air cooler.

There are other facts that people either do not know or often get wrong. Below are some of the simple facts about mist fans.

People are not supposed to get wet

One of the more hilarious mistakes people make about mist fans is that they think they are supposed to get wet. Some people think that the idea behind mist fans is to get people wet.

MisterIn fact, a good misting fan will make sure that no person gets wet, at least anyone who stands at least six feet away from it. See, the reason why people do not get wet is because the water is supposed to evaporate before it even makes contact with the human body. Any mister that gets a person wet is either broken or poorly designed which is why it is not working as it was advertised.

They are not as new as people might think

Some people think of mist fans as some novelty piece of machinery. The truth is, mist fans have been around for the longest time. In fact, mist fans were first made more than a decade ago during the 1950’s when they were used by livestock owners to cool their livestock.

Mist fans are becoming more popular or common place nowadays. This is because people are only starting to realize the benefits of using a mist fan over an air conditioner. There are also other applications where mist fans are used for more than just cooling. Mist fans are enjoying increasing use in a wide variety of different applications.

They are used for more than just cooling

Mist fans are typically employed as a cooling solution. Aside from people, some factories actually employ mist fans in order to keep their machines operational. Overheating is a constant issue for a lot of machines. Mist fans help cool the environment and reduce the risk of the machine breaking down because of the heat it generates.

A mister is often employed in industrial settings where odor or dust is a prevalent problem. The water particles that a mist fan produces can help with managing dust or foul odor. This is because the water particles help capture the dust or odor particles and prevent them from spreading around through the air. They have become popular because mist fans are cost effective solutions to serious problems.

They require some amount of maintenance

Mist systemOwning a mist fan is not as simple as plugging it in, turning it on, and making sure it has enough water to use for the next hour or two. Mist fans, like a lot of machines, require some amount of maintenance. Do not worry, though, the amount of maintenance it takes to keep this machine operational is relatively low. A person simply needs to keep the mister nozzles are clog free and make sure that the pump is cleaned at least once a year.