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Found 6 results

  1. Thomas.Dodson

    DIY Dust Collection System

    I've received a couple requests for more information/instructions on how my DIY dust collection system works so I decided to write this guide. First, a crude diagram to help understand how it works. The idea is for water to act as a filter before dust even gets to the shop vac filter. It keeps the filter almost entirely clean and prevents dust from prematurely killing the motor. It's also a lot easier to clean up as you just dump the dirty water. The setup is simple and as long as the general process goes like this it is fine but I'll walk through how I built my current system. I use a two bucket system because the added height and volume allows for the operation of more powerful vacuums without sucking up the filter water. There are also similar systems available on sites like Youtube but the basic premise is the same. I remember seeing a clear one which was cool but I had the buckets I used for mine lying around already. You can build your own on the cheap with the following stuff. Required Materials 1x Bucket with sealing lid (Ideally a twist-lock lid) 1x Bucket without lid 1x PVC Elbow slip female to threaded male (1-1/4”) 1x PVC Pipe (1-1/4”) length varies but a 32" section gives you plenty. 1x Filter Pad (optional) Required Tools Drill with 1 1/4” hole drill bit Strong epoxy such as Gorilla Glue Step 1. Gather your 2 buckets. I like the rigid twist lock tops since it doesn't bend the pipe hole when you remove the lid like those other sealing lids on buckets do. I used an old chlorine tablet bucket I had around for the bucket with lid. Any ordinary 5 gallon bucket works for the top. Step 2. 2 holes are drilled into the bottom of the bucket without the lid. This will be the intake and outtake of the dust collection system. Step 3. Multiple holes are drilled into the lid of the bucket to accommodate air flow. One of these holes needs to line up with a hole on the bucket without the lid because the intake pipe will be threaded through them both. The multiple holes are under the filter pad (see Step 4.) Step 4 (optional). I like to silicone a disposable filter pad I cut into a circle over the other holes. This is just an added precaution against water leaving the dust collection system. The idea is air will flow through while a random splash of water will mostly be deflected or find it more difficult to make it to the top bucket. Step 5. Combine the buckets. Use a strong epoxy to combine the lidless bucket with the lid of the twist-lock bucket. I used gorilla glue epoxy. Mind the alignment of the intake pipe holes so you can thread the pipe in later. Allow the epoxy to properly cure and dry. The end result of this step is the lid of the bottom bucket and the top bucket as one piece. Step 6. Attach the elbow to one end of the PVC pipe length. PVC glue can be used but isn't really necessary. Cut the length of PVC pipe to the height of both buckets so the intake pipe rests an inch or two off the bottom of the bottom bucket and thread it through the holes. I like to allow this gap at the bottom so larger chunks of rock don't get stuck between the pipe and the bottom. Sometimes I vacuum chunks of matrix directly into the dust collector for disposal. I put a silicone ring around where the elbow sits on top but depending on suction power and how tightly fitting the pipe is this usually isn't necessary. It doesn't hurt though. The system is now complete. The vacuum hose has the regular attachment pushed firmly into the outtake hole. A separate hose connects the intake pipe elbow to the blast cabinet through a slip fit vacuum attachment. The top assembly comes off with the twist-lock and the dirty water is dumped at replaced when necessary. Here's a picture of dirty water after preparation. Operating notes: The working water level varies by vacuum power but you want the water level high enough to cover the bottom of the intake pipe by an inch or 2. If your water level is too high you'll find the vacuum will suck some water up until it gets to a stable water level. As long as the intake pipe is still below the water level this is fine. Hopefully this clears some things up. If anything is still unclear or there are any questions I'll do my best to respond.
  2. Jerrychang

    Big Otodus obliquus teeth

    Got a cheap Otodus obliquus teeth with matrix. It’s quite big (7.5cm).
  3. I threw together a guide to manual prep tools for one of my students who is interested in trying her hand at some peck and scratch work on fossils. Figure I'd share a version of it with yinze. (mildly edited to comply with forum regs) Manual Prep Tools- Earth Sciences Basic "starter tools" You probably have some stuff around your home already that will work for basic prep- large sewing needles, various nails and screws, and even old drill bits. Basically, if it is sharp and pointy, you can probably remove some rock! Hardened nails, like blued finish nails and masonry nails can be fashioned into finer points with a bit of grinder work. See also: Pin Vise (below) Another option is hobby knives, like an Exacto as there are tones of different disposable blades and hooks and such for them. Personally, I rarely use them for fossils as I tend to break off the fine points and need my blades for my models and such, however, if you got 'em, try 'em! Automotive gasket picks/o-ring picks Pros: Cheap and easy to get- any auction site or automotive parts store has them. ranges from cheap to moderately expensive. Available with thin, pencil like grips and heavy screwdriver like grips Cons: You get what you pay for, the cheap ones tend to be softer steel and prone to bending and breaking. Be ready to re-sharpen tips regularly. Lousy for hard matrix and may leave marks that rust later on. Dental Tools: Pros: Fairly easy to get consumer grade versions online. Range from cheap to pricey. Extremely fine points, but way require occasional sharpening. Cheaper ones tend to bend easily on rock. Cons: Real medical grade stainless steel dental picks (the best ones) may be illegal in some places as they are medical equipment and not intended for consumers. The best ones can cost a lot. Also very sharp and easy to stab yourself with... Dissection Probes (stainless steel) Pros: Affordable and relatively easy to buy online. Heavy stainless steel versions cost more, but have a variety of tip types you cannot get elsewhere that are very useful. Easy to resharpen and maintain. The blunt probes can easily be ground into chisel tips and quad points. Awesome for soft matrix. The spear point type are so useful! Cons: The cheapest ones are no better than gasket picks and are soft and prone to bending. Also, very sharp and easy to stab yourself with... Industrial tungsten carbide (tool steel) scribes Pros: A personal favorite for hard matrix and fine detail work. CHEAP. Large variety of styles from a pointy stick, to a retractable pen. Tips can be replaced and are cheap. Cons: Do not strike these with a tapper or hammer- the tip will shatter. Chisels: Pros: Excellent for removing big chunks. Good for small stuff too if you know what you are doing. Great for the field and the bench. Best ones are acquired through art supply stores. Cons: Buy carbide tipped chisels designed for stonework...many cold chisels are designed only for use on mild steel or masonry and are virtually useless for stone due to softer steel used. Heavy and you gonna need a variety of hammers. Also...expensive....but you get what you pay for. Specialty Chisels: There are special tool steel thin chisels designed for splitting shale. If you are a splitter and don't have a few of these, you are doin' it wrong! Pros: Specifically designed for splitting fossiliferous shale. Cons: Can be hard to source. Side note: You can make your own if you have access to a grinder and some "blue" spring steel. General Purpose Hammers: DO NOT USE A CLAW HAMMER. I say again, DO NOT USE A CLAW HAMMER. They are not designed or made to withstand meta on metal impact (like a chisel head). There are tonnes of brands and types, but a good quality ball peen and a few mini sledges will treat you right. Personally, I prefer the "deadblow" style, but wood handle and all steel are good too as you can get really small weights. Mallets: Trust me, having a mallet is really handy. Deadblows are my preferred (pictured above), but I also use a sculptors mallet...which once you learn how to use, will likely be the only hammer you ever use during prep. Don't laugh, but if you need to really wail on something, a bowling pin is awesome. Paint Brushes/chip brushes/wire brushes: Artist paint brushes are useful for all sorts of things, from removing dust to picking up small bits. I use a mix of synthetic and natural bristles Chip brushes are super cheap to the point of being disposable, but don't last very long if used wet. Also, 100% recyclable. a clay sculpting "feather" brush Pin Vise: This is a handy little item for holding, well, pins. For your purposes this can be regular sewing needles, large gauge needles, sharpened nails, etc. DO NOT over tighten the chuck. It will jam and ruin your tool. An Exacto type knife handle can double as a pin vise by changing out the chuck jaws with rotary (dremel) tool chuck jaws. Pros: Inexpensive and Easy to get most anywhere. However as with most tools, you get what you pay for. Often sold with tiny drill bits which are handy for lots of things. Cons: Thou shalt not over tighten thine chuck! Cheaper models have soft aluminum or brass ferrules which can be prone to breakage and thread stripping if over tightened. cheap version expensive version...designed for fine scale modelers...notice the chuck and ferrule are steel and nickle plate, rather than aluminum. Scratch Brushes also known as Wire Brushes including sculpture brushes: Cheap, easy to get, various types available anywhere! You will find lots of uses for these. (Also, old tooth brushes are handy...the kind without the rubber stuff in the bristles!) Pros: Many! Cons: Be careful! Brushes with steel bristles can rust and stain your specimen---stainless steel, aluminum, brass, and nylon are safer if you have humidity around! So, there is a brief overview of basic hand prep tools. Field tools and powered tools are an entirely different subject discussed well in other threads.
  4. Greetings kind people, Hope you are having a nice day:) There was a similar thread posted around the same topic, but a lot of those websites could not meet all my requirements so I'm here to seek help I'm looking for websites which are: 1) reliable and reputable 2) very inexpensive 3) ship internationally (particularly India) with good packaging and reasonable prices 4) good quality and vast collection 5) can provide most of my requirements in a single order(since I'll be shipping it to India, it would be economical to order everything from single website to cut down on transportation costs). I'll take down the post in case of violations of the guidelines. Please do let me know. Thanks in advance:)
  5. Fossil Claw

    Stands for fossils

    I just send it to start making some stands for my fossils. This is my first one. It's a very simple one. I bought some brass rod at the craft store and decide it it was way too flimsy and not up to the task. so I went into the closet and pulled out a coat hanger that had plenty of patina on it. None of their decided coat hangers to the right materials I did a post on Facebook asking for people's old hangers. I'm going to cut all the straight portions of the hangers and keep them and toss out the rest. Soon I will be swimming in free wire to make fossil stands. And the older coat hangers have better color to them and brand new brass. You can get the pre-cut wood plaques and hobby lobby or Michaels for about $0.75. I very lightly staind the wood because I'm one of the possible to stand out. You can easily make these for under a dollar apiece without even having to cut the wood. Next will be time to see winter coat hanger solder together very well for more intricate stands.
  6. I’m curious if anyone has any recommendations on cheaper microscopes that would be good for finer prep work. I have seen some very cheap ($30 or so) digital microscopes on amazon that seem to get good reviews. But I’m not sure digital is the way to go. I can’t afford more than around $100 right now.
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