Starship Modeler Discussion Forums

Not sure what the circuit does, so I can't advise on that.

Here is a calculator for resistors.

http://led.linear1.org/1led.wiz

Put a small capacitor in the second circuit, it will take a
moment for the capacitor to charge, and that should delay
your second LED start up.

Can't tell you what size capacitor though...

Wood working store would have them... http://www.woodcrafters.us/ Here in Portland has them... Micro Mark... http://www.ares-server.com/Ares/Ares.asp?MerchantID=RET01229&Action=Catalog&Type=Product&ID=81565 http://www.ares-server.com/Ares/Ares.asp?MerchantID=RET01229&Action=Catalog&a...

You might wander around here and see if these guys recommend anything comparable.. http://www.practicalmachinist.com/vb/showthread.php?t=97871 http://www.practicalmachinist.com/vb/showthread.php?t=158761 Sherline makes a micro set up... http://www.sherline.com/CNCmenu.htm I call a friend if I need a...

It has been criticised for using proprietary software. Any thing you have created has to be translated then run. Another criticism was the lack of a true "Zero point". The machine is unable to make a second pass because it has no way to establish a base point. Very nice for what it is, but...

http://www.mfacomodrills.com/index.html http://www.maplin.co.uk/searchtemplate.asp?criteria=MFA%20MOTORS Maybe Johnson, or Buhler motors... http://www.johnsonelectric.com/mediando/index.php?plugin=search_results&search=motor http://www.hobby-lobby-modellbau.com/onlineshop/index.php/cat/c391_B-hl...

The image is not showing,... but I imagine that if you drill out the corners of your engine openings, then cut across the piece to connect the holes, you should get a nice clean gaping hole. I think I would try to work behind the kit suppied face and limit the constuction to the engine "nozzle&...

Yes it is easy, But you have to know that you are dealing with High AC voltage. The lamps use an Ballast(inverter) that kick out a starting charge of up to 850 volts AC. And while lit run between 150-500 volts AC. The lamps, and the ballast can be picked up at Frys Electronics or ordered online. htt...

MF,...

If the drill chucks are not now throughly covered in flammable fluids, ...
A little bit of heat to the chuck might loosen it up.


And yes, the lathe and mill have had some good uses.
Now if I could just learn the CNC side of it, that would be something.

Kylwell wrote:Like this?

I grabbed this one, and the starter set

The mill was easy, the tooling up can be a pain...

If you are wiring in parallel then its a non issue. The voltage to all the LED are constant. Just put the appropriate resistor in at each LED, and wire your 555 timer circuit or other blinker timer in at the head of the string. :8) I wire Red, green, white, and yellow up on common circuits all the t...

Cant imagine you're doing anything wrong...
Unless you have some odd plastics that you are trying to scrap together.

Bondene should be good for ABS and Styrene...

I have a question about the molds. I have RTV Silicone and I have latex mold-building compound. Can I make two-piece simple molds from latex too? Will it hold up to being demolded? Thanks! Kenny Yes you can make two piece molds using latex molding compound. Back when that was all that was available...

Squeeze some air out of the bottle before you start your application. After applying the glue to your part set the bottle back down, The bottle will suck the glue, and then air back in clearing the tip. When storing for the eveing, use some tissue to wick any glue off of the tip, and squeeze the bot...

30-40 PSI is enough for pressure casting. No special RTV is required for pressure casting. Molds do not need to be made under pressure. However, the RTV should be de-aired under vacuum to remove trapped air bubbles. This is typically done in the tub just after mixing. And also to your mold after jus...

Stu Pidasso wrote:5 minute epoxy should work just fine.

What he said...

One way I build boat hulls http://www.rcgroups.com/forums/showthread.php?t=551258 Another persons take on the subject... http://www.hrfsbo.com/fireboat/ http://www.rvjunkie.com/sub/ just the hull........ http://www.rvjunkie.com/sub/hull.htm or frame it... http://groups.msn.com/ModelersAndHobbyForum/...

check out <A HREF="http://www.tapplastics.com/" target="_blank">TAP</A> plastics' how to video they have a method that you can use to degas without a pump. It is not conducive to making multiple molds at one time, and requires a stable protected area to in which to 'pour' the mo...

How thick is based on the diameter. A twelve inch diameter degassing chamber with a high vacuum capability typically has a minimum of a 3/4" Acrylic (Perspex/Plexiglas) lid. Be very cautious about going thinner. You might get away with it BUT it gives no warning if it's going to break and if i...

geez Umi, that tygon stuff is expensive....did you have it willed to you? ... umi, how did the cork gasket work? would assume the porosity of the cork would not lend itself to being airtight? however i will take a look at my Ace hardware (my local one sucks...but know of others)...what area of the ...

ACE hardware sells 1/8 thick, 12" wide rubber sheet by the roll. If that fits your pot, cut a hole in the middle set it on the pot, and set your acrylic over that. I had an piece of 1/16" thick cork that I used as a gasket for several years. My vacuum hose is a 7/8" id Tygon hose. The...

If your resin is foaming over the top of the cup, you are not using a big enough cup. :D When my first vacuum pump began to fail, it would pull just enough vacuum to make the resin or RTV to foam. Then it would leave the foam and just hang... When the pump got replaced, the vacuum chamber would blow...

I only use one pressure regulator off of the compressor. The pots all need the same pressure, and the pressure is set there. On each pot, there is a pressure gauge. This way I can verify that each pot has the right pressure, and isn't dropping. The guage is also useful to see that a pot is depressur...

Superglue, and the quick dry hobby cements are mostly CA these days.

CyanoAcrylate glue.

Shinnentai wrote:

Umi_Ryuzuki wrote:it is my experience that nothing attaches anything to aluminum

JB weld.

Actually you are correct there,... I have two pieces of an airfoiled
aluminium JBwelded together for my hydrofoil strut...

it is my experience that nothing attaches anything to aluminum, or those film canisters.. If something were to have a chance, it is better if the area is sanded and roughed up to give it some "tooth". The tiny grooves will give the adhesive something to grab on to.... Tiny screws and a bac...

I have one pot that I just pressurize and then turn off the valve and disconnect. It holds pressure well long enough for resin to cure. The larger pot needs to be connected, and the compressor will run once in a while to keep the pot at about 40 psi... The connectors Kywell linked are the simplest w...

So when using a homemade vacuum chamber the lesson is to have someone else test it out first...Done and done. Same for any cheap pressure cookers as pressure pots.. I knew that 1/2" thick was too thin, it was a cheaper replacement for the 3/4" thick piece that I had originally been using....

I have a couple molds for railing stancions that have a large resivoir on the top. I will oftent pour half the resin into the mixing cup and put that in to the vacuum chamber. Once it "boils" out, I mix the second part and put it under vacuum and again let it "boil" out. I fill t...

There is some open corrogated cardboard that may work for you.
It is basically card board box material that doesn't have the finish
paper on one side.

It is available at most art stores...