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Propane tanks - 5 gallon - recomended sources?

author: pyotr filipivich posted 11-18-2017

Decided I need a new/second tank - standard five gallon one each. Any comments, recommendations on where is a good source. There is the Blue Rhino stand at Safeway, but what is consensus? -- ... read more »

7016/Basic pipe v-up 5G/6G root technique

author: Richard Smith posted 11-18-2017

What is the technique for upward rooting a V-prep pipe root with 7016 - the likes of Filarc 56S? What is your technique? read more »

Table of RPM for drill size

author: news16 posted 03-23-2016

Is there a url around of a nice table of rpm for each drill size for the various material. Each time I need to use the vertical drill I figure it out, but it would be handy to final attack such ... read more »

Advice for novice

author: giovannigozio1974 posted 11-24-2016

Hi to all, I'm asking for advice in order to start working on metals. Any idea will be much appreciated, from necessary tools to equipment etc etc. Regards read more »

EN AW-5754 fatigue strength

author: mw158979 posted 06-17-2017

Hello, What is the fatigue strength of 5754 aluminium alloy? Any states. thanks in advance read more »

Engineering and Science


author: eeglory1234 posted 11-03-2017

Hello everyone. 1.) I have an electronics board that has 10 wires coming out that gets conn ected to an end users board with an Ethernet type cable. During our Elect romagnetic Compatibility (EM... read more »

Wipac Cj magneto drive gear

author: Huw77 posted 05-10-2017

Hi, I've recently acquired my first stationary engine, a 1949 Ruston pt. The magneto it came fitted with is a Wipac cj,seems to be missing a part (gear)to drive the mag.....any help , and advice wher... read more »

Bluestar Nantong Xingchen Introduced Filament Grade PBT Resin (StaresterFL)

author: superhua posted 07-02-2017

About Us Nantong Xingchen Synthetic Materials Co., Ltd., formerly known as the Nantong Synthetic Material Plant of the China Ministry of Chemical Industry (CMCI), was founded in 1974. It is subordin... read more »

Modeling Simulation textbook "Engineering Design Optimization using Calculus Level Methods: A Casebook Approach"

author: OptimalDesigns posted 10-02-2017

This is a casebook of math problems from industry. The source code and out put are listed. The problems solved range from Algebra thru Differential e quations. Problems include Initial-Value, Bo... read more »

Universal pe,pp zipper profile

author: nick posted 09-05-2017

We are manufacturers of Pe zipper profiles. Recently we are receiving enquiries about developing a universal zipper profile that can be used on both PE AND PP films. One of our competitors has alre... read more »

Computer-Aided Design and Manufacturing

Any Info for NND Nakanippon Robot Arm (Small)

author: superchargerone posted 09-19-2017

Dear All I am looking for information and particularly software to run an old NND Nakanippon Electric Co's 5 axis robotic arm. It was painted bright orange by the factory and consist of 1. 5 axis ... read more »

Peter Ponders PID YouTube Channel

author: pnachtwey posted 07-22-2017

https://www.youtube.com/user/pnachtwey The name sounds basic but I am actually targeting control professionals and those with math skills to understand the math behind the control theory. This ch... read more »

Fadal transformer issue

author: Douglas A senterfitt posted 09-19-2017

Fadal 3016 error 18 on x,y,&z transformer power issue maybe https://www.polytechforum.com/img/5z https://www.polytechforum.com/img/60 read more »

deployable door.

author: hassity posted 09-03-2017

Hey guys, I was interested on deployable systems and this time I was trying to make deployable door. The door design have two approaches 1 ) zigzag pattern muira-ori origami approach 2) hand fa... read more »

Visual Basic problem.

author: Bill DeShawn posted 06-25-2017

When I installed AutoCAD 2013, I included the Visual Basic option. The code shown below works in previous versions of AutoCAD, but not in Auto CAD 2013. Can somebody help me to get it working. ... read more »

I tried to Export the assembly from ProE Intralink workspace to Disk. But I got a message showing "An error occured on Import/Export." Do anyone help me to resolve this ?

author: Prabin posted 07-28-2017

Even I check the all dependencies everything looks good. All the sub components are exported with out any error. But Every time when i tried to export the assembly file , I get this message. read more »

Model Engineering

Auction of Railwayana

author: Davey posted 11-15-2017

Full-size stuff, but might be of interest to somebody. https://www.twgaze.co.uk/auctions/catalogues-and-auctions/current-catalogues/the-peter-punchard-collection-of-railwayana/ -- Davey. read more »

Halmark Models

author: KB8QEU posted 11-14-2017

Is Halmark Model still produced? I use to see and buy them in Dallas, Texas. I can not remember the shop that a woman ran after her husband died. Does any one remember? It was from 1979 to 1982 e... read more »

P51 Exaust Shrouds

author: Mike posted 11-13-2017

Is there a reason why some Merlin-powered P-51s have shrouded exaust stacks and others have unshrouded exaust stacks? I have seen photos showing both and I am trying to figure out why. Was there ... read more »

Modelling accuracy - a valuable resource

author: Gareth's Downstairs Computer posted 10-22-2017

Just been watching the old BW film, Waterloo Road. What a valuable record of the railways and all their furniture are these old films! read more »

Sbach 30 cc gas Orange, Black, White (73"w.s.)

author: JosephJ711 posted 02-06-2017

Wanted: N.I.B. (arf) Sbach 30 cc ORANGE,Black,white read more »

rec.models.rockets FAQ Part 02 - Names and Addresses

author: rmrfaq posted 11-17-2017

Archive-name: model-rockets/addresses Rec-models-rockets-archive-name: rockets-faq/part02 Posting-Frequency: weekly Last-modified: 2002 May 14 URL: http://www.ninfinger.org/~sven/rockets/rmrfaq.t... read more »

LEGO 3D Milling Machine

author: passerby posted 03-31-2013

Saw this in another group, could not resist re-posting here: http://youtu.be/oF0pMILT7_Y NXT-based. Given that it's Easter today, can't resist the temptation to compare it to the Eggbot - similar des... read more »

Studless beams (liftarms)

author: marblypup posted 08-20-2017

I've just been reading on Wikipedia about Technic trending to studless beams. It shows how long it's been since I bought a Technic set that I didn't know about this. I did my a Mindstorms NXT when i... read more »

International Engineering (BETA)

Das Problem der inversen Laplace-Transformation in den Ingenieurwissenschaften

author: Leo Baumann posted 11-16-2017

Nach einiger Recherche kann man ein Verfahren finden, mit dem die Ein Herr Talbot hat sich der Sache angenommen und ein numerisches Verfahren erfunden, bei dem der Fehler der berechneten Funktion... read more »

Leistung eines Drehstromelektromotor bei 50Hz/60Hz

author: Heiner Veelken posted 08-10-2017

Kann ein Drehstrommotor bei 60Hz i(mmer) mehr leisten als bei 50Hz? -- Gruss Heiner read more »

Abruestung wegen Umzug

author: Rainer Pätz posted 10-31-2017

Moin Gemeinde gerade etwas ab. Stichwort Zeitschriften: bevor ich die in die Tonne trete, frage ich mal hier nach, ob jemanden noch was fehlt in seiner Sammlung. Falls ich's habe, kann derjenige... read more »

[Conseils d'utilisation] fr.rec.modelisme

author: J.F PION posted 11-02-2017

Archive-Name: fr/chartes/rec.modelisme ======================================================================= = Conseils d'utilisation du forum fr.rec.modelisme = ==========... read more »

Carica batterie litio 8,4 volt decente ....dove

author: PANDEMO posted 02-17-2017

AIUTO.... devo caricare pacchi batterie vari da 8,4 V ma senza bilancamento quindi mi serve un CB non professionale ma valido. avevo preso da un napoletano su ebay un IMAX B6 ma mi sa che come leg... read more »

Boston Dynamics

author: Robert Wañkowski posted 11-17-2017

https://youtu.be/fRj34o4hN4I Robert read more »

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