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  • Prfesser commented on tonyhill's instructable You Too Can Make an Anvil6 weeks ago
    You Too Can Make an Anvil

    Wow.... just wow. Turn square stock into a $2000 anvil... you got my vote!

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  • The Swedish Killevipp Or: Dessert Goes Supernova

    That looks absolutely FABULOUS! Yet another dessert for me to try...

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  • Prfesser commented on Waldemar Sha's instructable Guillotine Not Only Paper Cutter 2 months ago
    Guillotine Not Only Paper Cutter

    Outstanding! Our office has one with a plastic base which cracked after the first few uses. I think I'll make a new wooden base using your instructable as inspiration. Thanks!

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  • Prfesser commented on Lalramsiam's instructable Boeing 787 Dreamliner (Glider) Build3 months ago
    Boeing 787 Dreamliner (Glider) Build

    A very nice looking model!You may have a lot less mess and smoother finish if *extruded* styrene foam is used instead of *expanded* foam (beadboard). Construction sites for new housing often have scraps of the extruded foam after they're done with insulating. Two things to remember: make sure it's polystyrene and not polyurethane (PU) foam. PU foam can give off nasty gases when it's hot-wire cut. And the extruded foam usually has a vapor barrier on each face. Peel those off before hotwiring or gluing.

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  • Prfesser commented on DonS89's instructable Making a Keep-Warm Box3 months ago
    Making a Keep-Warm Box

    Nice! I made something similar for curing epoxy-fiberglass parts, except that the panels you creatively acquired weren't available around here, at least not for free. I used 1/4" tile backerboard for the box, surrounded by 2" thick blueboard styrofoam, glued with epoxy, and with edges protected with Gorilla tape.Got a thermostat similar to this one on eBay, runs around $20-25:https://www.ebay.com/itm/AC-112-Pets-Digital-LED-T...or search for 'aquarium thermostat'. With a 60 watt bulb and a small fan to distribute the heat, an internal temperature of 150 F could be maintained against 45 F outdoor temperature.Also: check furniture store dumpsters, I was able to scavenge large pieces of 2" styro beadboard for another curing box.

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  • Poor Man's Electric Powered Standing Desk

    A very well-illustrated instructable! I need one of these for home, as I sit at the computer much of the day; I'd rather stand!

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  • Prfesser commented on klinong's instructable Lemon Cream Cake3 months ago
    Lemon Cream Cake

    What size pan is used for this? It makes a huge difference.

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  • Dark Larry Layer Cake With Chocolate Filling

    I am going to be ten pounds (about 5 kilos :-)) heavier after making this cake... Your idea for cutting cake layers evenly is excellent, simple but accurate; I must remember that one!

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  • Prfesser commented on ÁdámM263's instructable Giant Hacksaw.4 months ago
    Giant Hacksaw.

    I like it! A suggestion: find a machine shop nearby. Ask if they have any old bandsaw blades that they'd like to get rid of. Since the blade is hardened steel, you'll need to anneal the ends (heat red-hot, cover with dry sand or ashes and allow to cool) in order to drill the ends. But it'd be less work than grinding a bunch of teeth. (And you'd have an actual working hacksaw!)

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  • Prfesser commented on VespressoCooking's instructable Cheesy Leftover Mashed Potato Cups5 months ago
    Cheesy Leftover Mashed Potato Cups

    This one looks like a keeper! We always have leftover mashed potatoes. BTW nutmeg goes great in a lot of potato dishes---I use it in potato soup. And it will nutmeg you sick... OK, I'll leave now...:)

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  • Simple Method to Make Your Frying Pan Non Stick & Non Toxic

    I agree that adding fat to a hugely-overheated skillet can be hazardous to your health. OTOH "The Frugal Gourmet", Jeff Smith, gave a tip on TV that I've remembered and used for decades: "Hot pan, cold oil, food won't stick." Just don't heat the pan rocket-hot before adding oil. Works nicely.

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  • Prfesser commented on kscout283's instructable Lathe Bowl Chuck6 months ago
    Lathe Bowl Chuck

    I very STRONGLY suggest making arms of different lengths to accommodate different bowls. NOT a single set of arms that project from the lathe chuck, with holes for adjustment. If a piece of steel spinning at several hundred rpm hits a finger, it is likely to remove the finger(s) rather than just bumping the hand aside. There is a video on the web of a man whose sleeve was caught in the lathe. Not pretty. Safety first, please.

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  • Prfesser commented on JvHooren's instructable Cat Scratching Pole7 months ago
    Cat Scratching Pole

    Wish I'd seen this about a year ago, when I was construcing my cat tree. Yours would have been much easier to make, and sturdier. Looks like it'd be easy to cover it with scrap carpet too.Besides carpet, the only thing I'd add would be weight to the bottom. Paving stones, maybe? If my 15-lb cat junped from the floor onto one of the platforms, he might tip the whole thing over.Great job! You've got my vote!

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  • How to Make a Propane Dual Zone BBQ Burner

    FanTASTIC! Very well illustrated and explained. I'm willing to bet that your replacement will outlast the grill itself! You've got me thinking about my own grill, which has four burners. Time to take a careful look and see what I can do with it...

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  • Perfect Citrus Segments (Using Science!)

    I just checked eBay and pectinase is available in bulk, $10/lb. Thank you OP!

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  • End Grain Cutting Board | a DIY Tutorial

    An end-grain cutting board has the end grain of the wood as the surface. Look at your first photo of all those boards; an end-grain board has those ends facing up, like this:https://www.instructables.com/id/End-Grain-Cutting...A knife blade dulls less when used on an end-grain cutting board, due to the natural tendency of the blade to fit between bits of the grain.Best -- Prfesser

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  • How to Make Cream Cheese at Home - Philadelphia Cream Cheese Recipe (EASY)

    I did not watch any videos (and generally don't). What are the ingredients? (It would be nice if the list was at the beginning.)

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  • Live Edge River Table | Woodworking How-To

    FWIW tempered glass usually will fracture into rounded bits if it's scratched heavily or struck hard. Working tempered glass is not advisable; ordinary window glass, or plate glass (3/16" thick) is better.

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  • Prfesser commented on tatebullrider's instructable How to Build a Car Tire Unicycle1 year ago
    How to Build a Car Tire Unicycle

    Very interesting! Of course, I'd end up damaging myself if I tried to ride it...:-)One suggestion: Some stiff foam pipe insulation or similar, held in place with the handyman's secret weapon---plenty of duct tape--- would minimize possible injury to the user in the event of a fall.Keep us posted on progress!

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  • Chocolate Christmas Oreo Bundt Cake

    Looks delicious! It's not quite gluten free as Oreos contain wheat flour, but it undoubtedly has a lot less gluten than most cakes.

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  • Prfesser commented on seamster's instructable Make Your Own Kraft Paper Tubes1 year ago
    Make Your Own Kraft Paper Tubes

    Hi, about 20 years ago I wrote a pamphlet on making spiral-wound paper tubes, very similar to your methods. It's currently sold by Apogee Components: https://www.apogeerockets.com/Rocket_Books_Videos/...Like qdogg, I found that gummed kraft packing tape works best. It's often made from virgin kraft which is stronger than the recycled stuff. It doesn't wrinkle significantly (a BIG plus, let me tell you!). Tubes of almost any length can be made---cutting a strip of kraft paper more than 3-4 ft long with parallel edges is something of a chore. And it's quite cheap---$7 for a 600 foot roll of 3" wide, which works nicely for tubes over 1.5" diameter.http://www.dickblick.com/products/kraft-paper-tape...2" wide and even 1.5" wide tapes can be found on eBay and Walmart:h...

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    Hi, about 20 years ago I wrote a pamphlet on making spiral-wound paper tubes, very similar to your methods. It's currently sold by Apogee Components: https://www.apogeerockets.com/Rocket_Books_Videos/...Like qdogg, I found that gummed kraft packing tape works best. It's often made from virgin kraft which is stronger than the recycled stuff. It doesn't wrinkle significantly (a BIG plus, let me tell you!). Tubes of almost any length can be made---cutting a strip of kraft paper more than 3-4 ft long with parallel edges is something of a chore. And it's quite cheap---$7 for a 600 foot roll of 3" wide, which works nicely for tubes over 1.5" diameter.http://www.dickblick.com/products/kraft-paper-tape...2" wide and even 1.5" wide tapes can be found on eBay and Walmart:https://www.walmart.com/ip/Pacon-Pre-Gummed-Self-A...A few hints from my own experience:--A layer of waxed paper, with ends scotch-taped to the mandrel, and/or a little talcum powder (talc, not cornstarch) makes it easier to get the tube off the mandrel. Careful: tape doesn't stick well to wax paper and it's easy to wrinkle the wax paper while winding.--As you pointed out, the tube shrinks when drying. For near-perfect sized tubes, use a double layer of waxed paper and talcum on the mandrel. Slide the finished tube off, a little more talc on the mandrel, then slide it back on to dry. Usually it will shrink to a tight but still-can-get-it-off fit. If it is still too tight, three layers of waxed paper.--Tubes much over 2' long may warp a bit after they're made. Winding layers in opposite directions helps some, though it's tedious.--For you rocketry nuts, 1/2" EMT conduit is just about right for 18 mm (BT-20) tubes. 3/4" EMT is a bit small for 24 mm (BT50) but can be built up with a few layers of tape. 1" conduit is about right for 29 mm tubes.

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  • Prfesser commented on geotek's instructable Building an Aztec Drum1 year ago
    Building an Aztec Drum

    Had a woodworker friend make one for my wife's birthday. Wish I had had this 'ible back then, I'd have made it myself. Well done!For a bit of verisimilitude, wrap the rubber balls in a small disk of chamois (found in automotive department, used to wash/dry car) and tie around the drumstick with a thin leather strip or a string. Adds to the realism.

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  • Raspberry Cheese Cake Without a Base

    That looks wonderful! One question: what is Quark? I don't think we have it in the US.

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  • Prfesser commented on rdzisaac's instructable Renew Your Outlets1 year ago
    Renew Your Outlets

    My understanding is that twisting the wires and covering with electrical tape is only permitted by code if the wires are soldered/brazed/welded.

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  • Prfesser commented on J_Calder's instructable Caliper Calibration1 year ago
    Caliper Calibration

    Be aware that some dial calipers have a knurled knob that, when loosened, allows the entire dial to rotate. Close the caliper, loosen the knob, rotate the dial so that the pointer is on zero. Tighten the knob. Of course, as you point out, this leaves the zero in a position other than 12 o'clock...

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  • Prfesser commented on primerdome's instructable Basic DIY Woodglue Photoemulsion1 year ago
    Basic DIY Woodglue Photoemulsion

    Please note: this Instructable says "chromate" in one place and "dichromate" in another. It should be "dichromate" according to the bottle in the first image.

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  • Prfesser commented on als_liahona's instructable Build a High Power Rocket Nozzle1 year ago
    Build a High Power Rocket Nozzle

    I know this is an old 'ible but for the benefit of those who haven't read it before...Nozzles made with Durham's water putty work okay with "sugar" propellant and blackpowder. They do NOT work well with ammonium perchlorate composite propellant, especially if the propellant contains any metal as a fuel. Sugar propellants burn at about 3000F; APCP with aluminum, in excess of 5000F. And exhaust from APCP contains a lot of hydrogen chloride (hydrochloric acid= hydrogen chloride dissolved in water). You can imagine what 5000F hydrochloric acid does to almost anything...FWIW I have attempted nozzles for APCP motors using water putty, plaster of paris, portland cement, clay (molded to shape and kiln-fired before use), graphite powder mixed with epoxy, and a number of other materi...

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    I know this is an old 'ible but for the benefit of those who haven't read it before...Nozzles made with Durham's water putty work okay with "sugar" propellant and blackpowder. They do NOT work well with ammonium perchlorate composite propellant, especially if the propellant contains any metal as a fuel. Sugar propellants burn at about 3000F; APCP with aluminum, in excess of 5000F. And exhaust from APCP contains a lot of hydrogen chloride (hydrochloric acid= hydrogen chloride dissolved in water). You can imagine what 5000F hydrochloric acid does to almost anything...FWIW I have attempted nozzles for APCP motors using water putty, plaster of paris, portland cement, clay (molded to shape and kiln-fired before use), graphite powder mixed with epoxy, and a number of other materials and mixtures. With APCP, fired clay erodes but not too badly if the propellant doesn't contain aluminum or magnesium. Graphite powder mixed with a resorcinol glue is about as good as commercial phenolic nozzles (e.g., Aerotech), though the glue shrinks a lot.Bottom line: for APCP, machined graphite is far and away the material of choice.Best regards -- Terry

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  • Prfesser commented on Batmantwo's instructable Glass Like Finish on Wood2 years ago
    Glass Like Finish on Wood

    It's a good idea to level the piece very carefully before pouring the resin, for an even coat.

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  • Prfesser commented on Davida675's instructable How to Make an M&M Anti Gravity Cake2 years ago
    How to Make an M&M Anti Gravity Cake

    I didn't get what this was at first from the thumbnail, but...INGENIOUS! Well done!

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  • Prfesser commented on mikeasaurus's instructable 5 Ways to Remove a Stripped Screw2 years ago
    5 Ways to Remove a Stripped Screw

    You can purchase left-hand drill bit sets with corresponding screw extractors. The bit cuts in the opposite direction of a normal drill bit; sometimes, just drilling into the screw with a left-hand bit will remove it. If not...that's what the extractor is for. Check out eBay:http://www.ebay.com/itm/10PC-SCREW-EXTRACTOR-EASY-OUT-LEFT-HAND-DRILL-BIT-/290556839769?hash=item43a6898759:g:Vf8AAOSwepJXYJOR

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  • Prfesser commented on StephanP1's instructable Beam Compass2 years ago
    Beam Compass

    Simple and very useful! Commercial 'trammel points' are rather expensive; this is a great alternative!

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  • Prfesser commented on Bruceputman's instructable 12" Disc Sander2 years ago
    12" Disc Sander

    VERY nicely done and illustrated, and a beautiful project! (Personal opinion: All too many Instructables have only a video. I know they're easiest to prepare but they simply can't tell the whole story. I no longer even bother to view the video-only Instructables. SO glad to see detailed photos instead!)

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  • Prfesser commented on ineverfinishanyth's instructable DIY Metal Stamping2 years ago
    DIY Metal Stamping

    Nicely done!A suggestion: aluminum beverage cans are made by pressing in stages:http://www.my.all.biz/img/my/catalog/25321.jpegI don't know how practical it would be to make an intermediate die of shallower depth...Also, the aluminum and die are well-lubricated before pressing. Might cut down on the tearing.

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  • Tangential Tool Holder for Taig Lathe

    Marvelous! Time for me to dig out a chunk of aluminum from my scrap box and get to work! Thank you!!

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  • Unexpected result during fire resistance test (final test)

    Grog is already-fired clay. You can make grog by grinding up ordinary ceramic flowerpots.

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  • Prfesser commented on asemery's instructable Snow Shovel Hack2 years ago
    Snow Shovel Hack

    As someone who had back surgery a couple of years ago...thank you! If we get snow this year I'll definitely try this.

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  • Toilet Roll Dispenser/Holder - Hot Off the Press

    Nicely done! I can see a practical advantage to this gadget. When the roll runs out, you still have the paper that's running on the spindles to use; it'll do until you can get another roll.

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  • Prfesser commented on bobcatsteph3's instructable Seedless Black Raspberry Jam2 years ago
    Seedless Black Raspberry Jam

    Black raspberry flavor is way above either blackberries or red raspberries. I have a few quarts of frozen Pennsylvania wild black raspberries that my sister gave me a couple of months ago. Looking forward to making your recipe!

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  • Prfesser commented on FelisC's instructable How to generate high-level radiation3 years ago
    How to generate high-level radiation

    X-rays only. Gamma rays and beta particles are from nuclear decay.

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  • Prfesser commented on cyann04's instructable Authentic Hamburger Gravy3 years ago
    Authentic Hamburger Gravy

    Here's a typical recipe. Buttermilk is a cultured product, similar to but thinner than yogurt. http://www.food.com/recipe/southern-buttermilk-biscuits-26110

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