# amclaussen

http://www.imp.mx
1
156CommentsMexico City, MEXICOJoined April 28th, 2009

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## Achievements

100+ Comments Earned a bronze medal
• amclaussen commented on vnod2805's instructable The Resistor8 weeks ago

The BEST calculator of all is KNOWING how to calculate in the first place! for those fortunate enough to have an old HP scientific calculator, it is very fast and simple: suppose you have three reistances in paralell, of 2, 3 and 4 Ohm.You punch 1 ENTER 2 / 1 ENTER 3 / + 1 ENTER 4 / + 1 ENTER (EXCHANGE X AND Y) / AND THE RESULT IS 0.923 OHMS.Even simple calculators allow to perfom inverse of a number if you press two times the operation "/" or divide by...it goes like: 2 / / 1 = 0.5, then 3 / / 1 = .33, then 4 / / 1 = .25, then sum the 3 numbers and lastly obtain the inverse or reciprocal of that sum.Easy.

• amclaussen commented on nerdyKat's instructable Welding Plastics: Drill Bit Case4 months ago

I will be trying that myself soon. I need to make a set of small sliding "bearing" pads, that will take out the freeplay that a jigsaw cutting guide has. Even when Bosch has a nice aluminum guide rail for its large jigsaws, its sliding base where the jigsaw is attached has a too wide slot, so that the baseplate has too much freeplay. By inserting four small HDPE pads so take out the freeplay, the guide rail would be much more precise. I thought about using UHMWPE, as it has a better (lower) friction coefficient, but I found it too difficult to buy in small quantities. Using HDPE appears to be a good idea, but I have not yet figured out how to fix or attach it to the baseplate easily. Any idea? Best Regards.Amclaussen.

• amclaussen commented on tomatoskins's instructable Make a Wood Tap From a Bolt6 months ago

Threads cut into wood are too weak. To reinforce them, apply cyanoacrilate glue (aka Krazy glue) to the recently cut threads, allow to dry and rethread them lightly and carefully with your tap. Then apply a very little quantity of candle wax. the glue-hardened wood thread will be much more durable and strong! Amclaussen.

EXACTLY!, but adding a little candle wax to the Cyanoed thread aids in maintaining the Cyano reinforced thread better! Amclaussen.

• amclaussen commented on tomatoskins's instructable 20 Unusual Uses for Shop Tools6 months ago

Not a vry good suggestion: about 99% of the miter gauges are quite inaccurate! An inexpensive Harbor Freight stainless protractor is better. The only time the miter gauge is useful, is when it can hold an angle and then it is used to transfer that angle WITHOUT Reading it in the scale, where the gross inaccuracy is! Amclaussen.

You can also put glue into the crack by using a siringe, Using both means (the siringe plus the vacuum would be best.

• In addition to the usual charge protection circuits, I have the practice of charging Lithiums inside a large ceramic pot, and to place this and the charger on the ceramic tile floor of my bathroom, where there is nothing that can catch fire. I've seen a parked car being completely incinerated at an R/C flying field because the owner felt confident and left his Li-Po pack under charge inside the hot car parked in the sun...

No problem, believe me. I have done it several times. You worry too much, give it a try!

NO PROBLEM... absolutely. I have used Lithium cells with higher voltage on a Black & Decker drill that used NiMH or Nicad "Versapack" (two of them, so it was 7.2 V), and that works BEAUTIFULLY with the higher voltage of the 3 cell in series Lithium batteries, and also used an old electric R/C car motor supposedly meant for 12V with up to 14.4 V with absolutely no problems, Author has said it perfectly: the small DC motors are rugged and not critical of voltage (up to a point, of course!).

• When a battery can only supply a very brief burst of power, it means that battery has a very high internal resistance (because it has degraded too much) or because of a "protection circuit" impedes it to supply a larger current. Check your battery's output current capability. Look at webpages on rechargeable batteries for testing methods. A good 18650 cell is capable of turning a small cordless drill much better than the NiMH or old Nicads, but you need to match the batt pack voltage to the requirement of the drill. I replaced the ailing Versapack batteries in my old Black&Decker cordless drill that uses two Versapacks (7.2 volts NiMH by installing three (yes 3) Lithium 18650 cells because the motor is strong enough to handle the raised voltage quite well. This weak m...

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When a battery can only supply a very brief burst of power, it means that battery has a very high internal resistance (because it has degraded too much) or because of a "protection circuit" impedes it to supply a larger current. Check your battery's output current capability. Look at webpages on rechargeable batteries for testing methods. A good 18650 cell is capable of turning a small cordless drill much better than the NiMH or old Nicads, but you need to match the batt pack voltage to the requirement of the drill. I replaced the ailing Versapack batteries in my old Black&Decker cordless drill that uses two Versapacks (7.2 volts NiMH by installing three (yes 3) Lithium 18650 cells because the motor is strong enough to handle the raised voltage quite well. This weak model of drill now has better power and the charge lasts more then when it had new NiMH Versapack batteries.I recharge the three 18650 batteries with my Aeromodeling charger, called "Triton" that can recharge either NiCads, NiMHs, Lithium-ion and LiPo (Lithium-Polymer) cells as well as Lead-Acid batteries, because it was sold for aeromodellers that use 8 cell Nickel packs in the Transmitter, 4 or 5 Nickel cells in the Receiver, and LiPo cells in electric model airplanes or Helicopters, and the 12 volt Glow plug engine starters. All in all a VERY VERSATILE charger! Amclaussen.

Although there are some small chargers that can recharge a canned Lithium cell, the charger needs to be specifically designed to recharge a LITHIUM cell... It is dangerous to try to recharge a Lithium rechargeable cell with any other type of charger! the risk is from severely bulging the cell, to exploding and catching fire. I use a very versatile charger that is sold to recharge the multiple cell types used in Aeromodeling, as you need to recharge the NiCad or NiMH cells in the transmitter (usually 8 AA cells pack), or the Receiver (usually a 4 to 5 cell pack of variable capacity) or the Lithium Ion cells like the 18650, or Lithium Polymer cells like those for electric model airplanes or Helis, and even Lead-Acid small batteries. I use and recommend the "Triton" charger or ...

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Although there are some small chargers that can recharge a canned Lithium cell, the charger needs to be specifically designed to recharge a LITHIUM cell... It is dangerous to try to recharge a Lithium rechargeable cell with any other type of charger! the risk is from severely bulging the cell, to exploding and catching fire. I use a very versatile charger that is sold to recharge the multiple cell types used in Aeromodeling, as you need to recharge the NiCad or NiMH cells in the transmitter (usually 8 AA cells pack), or the Receiver (usually a 4 to 5 cell pack of variable capacity) or the Lithium Ion cells like the 18650, or Lithium Polymer cells like those for electric model airplanes or Helis, and even Lead-Acid small batteries. I use and recommend the "Triton" charger or any other of the ones used for RC model airplanes because of its versatility, the protection circuit it has and the convenience.. Amclaussen.

• Very good suggestion, not only the capacity is much higher, but even more important: the internal resistance is much lower than half the resistance fo the RCR123 (paralleling two of them halves the resistance, but the single 18650 cell is even better). In motorized applications, the current demand governs the performance, thus the lowest cell internal resistance, the more actual power the device can utilize. Years ago I was quite ignorant about battery performance, I went to a wedding, where one of the friends of the bride was performing as the Unofficial-official Photographer of the ceremony. I saw him loading 4 AA cells of the rechargeable type (those were the older NiCads)... I naively pretended to know about electronics and said: "Maybe you are losing the speed of recharging...

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• Hi bensmith, I did exactly the same thing to my DeWalt 15 gallon Oil-Free compressor bought at SAM's... The air inlet filter is housed in a too small container that had only six very small (I think it was 1/4") holes letting the air into the compressor head, probably for silencing purposes, but it appears to be a result from bad or mediocre design and lack of engineering; which gives us plenty of opportunities to try to upgrade the factory design.But the worst thing in the DeWalt, was that the electric motor-compressor housing had a round opening that let the Ozone-Ladden cooling air to be aspirated into the compressor, to be delivered to the tank, thus the compressed air had a strong ozone smell, which means that the compressed air is contaminated with the ozone produced by the el...

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I have one comment on the TYPE of filter. I don't like the oiled foam filters when used on oil-free compressors (like my DeWalt 15 gallon, 200 PSI), because it will contaminate the air on that type. A dry "paper" (in reality it should be a Resin treated paper) filter is best, even when you need to replace the element from time to time, dpending on how dirty is the air in your shop. In oil lubricated compressors the oil added by the oil-foam filter is of no consequence, but it tends to be less eficient than pleated paper ones. Amclaussen.

• What GordonS6 and rafununu object is that "peak" power is meaningless... It is like trying to rate the instantaneous power for, say an automobile: you could argue that your VW Bug has, say, 1,200 HP... and maybe it can, imagine you attach a very heavy trailer. If you step on the acccelerator pedal for several seconds and then suddenly release the clutch, for a very brief (and useless) fraction of a second, the poor VW would develop a true 1,200 HP, and then die, but the trailer hardly moved a fraction of na inch!.So called ""PMPO" power ratings are completely misleading and useless, those are akin to raise the volume to the top, and then shorting the output! A much better practice is to specify the continuous power (sometimes wrongly stated as "RMS Power...

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What GordonS6 and rafununu object is that "peak" power is meaningless... It is like trying to rate the instantaneous power for, say an automobile: you could argue that your VW Bug has, say, 1,200 HP... and maybe it can, imagine you attach a very heavy trailer. If you step on the acccelerator pedal for several seconds and then suddenly release the clutch, for a very brief (and useless) fraction of a second, the poor VW would develop a true 1,200 HP, and then die, but the trailer hardly moved a fraction of na inch!.So called ""PMPO" power ratings are completely misleading and useless, those are akin to raise the volume to the top, and then shorting the output! A much better practice is to specify the continuous power (sometimes wrongly stated as "RMS Power") into a defined load of 8 Ohms, from 20-20,000 Hz with less than 0.1% harmonic distortion, for example.

• amclaussen commented on 4DIYers's instructable How to Clean a Throttle Body1 year ago

I saw a long video several years ago, where BMW dealers performed a complete and through cleaning by removing the entire inlet manifold and blasted nutshells with compressed air, while at the same time vacuuming the residues. That HAS TO be performed cylindr by cylinder, ensuring that both inlet and exhaust valves are 100% closed! he service was expensive, but results were so good, that the factory recommended that procedure. BTW, BMW engines are among the worst dirtying and inlet valve deposit forming ones among all. Amclaussen.

The BEST and most proper way, is to REMOVE the inlet manifold altogether, and clean it outside the engine bay. but unless you have means to clean the inlet portsand valves, a lot of gunk will still be there. Amclaussen.

YES, and it is because the "design" of the PCV system is lousy in 99% of the cars. Oil vapors are (supposedly) separated by "baffles" and the (supposedly) oil droplets free "clean" recirculation is fed to the engine inlet. But the sad truth is that, unless the PCV system has some means to cool the vapors stream, and then separate the oil droplets, that oil will end up as heavy deposits inside the inlet manifold, MAP and Temperature sensors, inlet valves and will result in heavy carbon deposits inside the combustion chamber, sparkplug and O2 sensor, and end up at the Cat converter... I'm installing a small section of air-oil cooler cut from an old condenser radiator, piping the stream from the PCV valve through the cooler, and then to a "Catch-Can (G...

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YES, and it is because the "design" of the PCV system is lousy in 99% of the cars. Oil vapors are (supposedly) separated by "baffles" and the (supposedly) oil droplets free "clean" recirculation is fed to the engine inlet. But the sad truth is that, unless the PCV system has some means to cool the vapors stream, and then separate the oil droplets, that oil will end up as heavy deposits inside the inlet manifold, MAP and Temperature sensors, inlet valves and will result in heavy carbon deposits inside the combustion chamber, sparkplug and O2 sensor, and end up at the Cat converter... I'm installing a small section of air-oil cooler cut from an old condenser radiator, piping the stream from the PCV valve through the cooler, and then to a "Catch-Can (GOOGLE that term for more info), as I'm tired of removing the entire inlet manifold to clean its insides. another example of how low has fallen the so called "automotive design". Amclaussen.

• amclaussen followed KitchenMason1 year ago
• I'm already waiting for tomorrows morning to enjoy this idea, THANKS SO MUCH!

Replace the sausage or bacon with Salmon or Tuna fillet bits, fried in olive oil for a healthier Quesadilla! (and remove the egg yolks too). In addition to the great spring onions, I would add some bits of red pepper. Amclaussen.

• amclaussen enrolled in Glue Class1 year ago
• While a good cyclone separator works, it still has a cutoff particle size, therefore very fine particles can´t be catched by cyclonic action. Particles under 10 microns in diameter are NOT "filtered" by the nose and mucus, and go directly to the bottom of the lungs. A combination of a cyclone (to remove all large and medium sized particles) and a second very fine filter (usually called "HEPA" filter) is needed. While water operated vacuums are efficient, they usually don't meet HEPA efficiencies, but are very convenient for disposing of dirt and dust.As a fully developed DIY-selfer, I use automotive type pleated filters as a practical final stage filter on my bench tolos, plus an HEPA certified respirator, as I've seen very sad cases of respiratory illness and...

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While a good cyclone separator works, it still has a cutoff particle size, therefore very fine particles can´t be catched by cyclonic action. Particles under 10 microns in diameter are NOT "filtered" by the nose and mucus, and go directly to the bottom of the lungs. A combination of a cyclone (to remove all large and medium sized particles) and a second very fine filter (usually called "HEPA" filter) is needed. While water operated vacuums are efficient, they usually don't meet HEPA efficiencies, but are very convenient for disposing of dirt and dust.As a fully developed DIY-selfer, I use automotive type pleated filters as a practical final stage filter on my bench tolos, plus an HEPA certified respirator, as I've seen very sad cases of respiratory illness and a couple of cancers in people that perform a lot of dust generating activities. Amclaussen.

• amclaussen commented on KronBjorn's instructable SaturnV Vacuum Rocket Launcher 2 years ago

Nice Instructable. How about putting a lightweight cover that is held down by the vacuum, and then just blown away by the rocket. A simple way would be to seal the cover to the tuve with some thin grease. That could add some máximum height.

• amclaussen commented on atenea's instructable Repair of a Delta Belt Sander2 years ago

Somebody can help me?Mine is a Sears 6" disc x 4" Belt sander that started to fail to keep the belt on the rollers: If I install the belt centered the rollers, it takes about 20 seconds for the belt to start "walking" towards either the front or the rear of the machine, regardless of the adjustement of the right side roller (if I turn the knob to one side, initially it tends to stop the belt running out of position, but makes it slowly start to go to the other side, so that I'm never able to keep it running centered. This problem was not present when the sander was new, and it behaved OK for three years, and then started acting. Any suggestions? Amclaussen (amarquezclaussen at Hotmail.com)