Search found 203 matches

by Pat Amaral
Fri Apr 03, 2009 5:00 pm
Forum: Lighting & Electronics
Topic: What kind of lighting effects are people looking for?
Replies: 44
Views: 41235

Ok. If my score wasn't geeky enough, I have one of these that I use when I read in bed (no, I didn't pay that much for it). So, since I don't have an immediate need for the tea lights, now I have an extended supply of batteries for the reading light. :wink: :8)
by Pat Amaral
Tue Mar 31, 2009 3:16 pm
Forum: Lighting & Electronics
Topic: What kind of lighting effects are people looking for?
Replies: 44
Views: 41235

I attended my nephew's wedding this past weekend. They chose to use the flickering LED tea lights as part of the centerpieces at the tables and being the geek of the family, I managed to bring home a bag of around thirty of them. :8) I think if one were to gang three of these things together, the ef...
by Pat Amaral
Sat Mar 07, 2009 3:30 am
Forum: Construction
Topic: Home built tools
Replies: 12
Views: 15669

I made an electric sander out of a battery operated toothbrush, some self-sticking Velcro disks and various grades of sandpaper. I also make CA applicators from sewing needles by cutting off the top of the needles' eyes (this was mentioned in the other thread).
by Pat Amaral
Fri Feb 27, 2009 4:14 pm
Forum: Construction
Topic: What are some good clamps for odd shaped models?
Replies: 14
Views: 10780

These things may not be as delicate as they should be but they are simple to use single-handedly.
by Pat Amaral
Tue Feb 24, 2009 2:29 am
Forum: Lighting & Electronics
Topic: Green laser fiber optic lighting for Martian war machine?
Replies: 9
Views: 4793

I had toyed with the idea of adding green laser pointers to my MIM resin kit as it is hollow as well. I wasn't going to use them as the "weapons" but was going to mount them in the three gravity projectors on the bottom. The ship was going to be pole mounted in a diorama. This would give ...
by Pat Amaral
Fri Feb 20, 2009 12:16 pm
Forum: Lighting & Electronics
Topic: What kind of lighting effects are people looking for?
Replies: 44
Views: 41235

A few years ago, FSM printed an article where a guy hacked one of those little am radios (the kind you get for free a a promotional item) to have the earphone output drive a red LED. He used it to light a campfire in a diorama. I don't remember all the details but, at the time, the idea seemed like ...
by Pat Amaral
Thu Feb 19, 2009 11:21 am
Forum: Lighting & Electronics
Topic: What kind of lighting effects are people looking for?
Replies: 44
Views: 41235

That sounds great, John!
by Pat Amaral
Thu Feb 12, 2009 7:22 pm
Forum: Finishing
Topic: Building a portable spray booth
Replies: 7
Views: 7410

I built a booth from a plastic storage bin, a bathroom fan, a small fluorescent light, a dryer vent/hose and some electrical bits. It has served me well. It's also pretty portable. I just put the vent and hose assembly inside and close the lid. the fan sticks out the back but it's not a problem to c...
by Pat Amaral
Sun Feb 08, 2009 3:02 pm
Forum: Lighting & Electronics
Topic: What kind of lighting effects are people looking for?
Replies: 44
Views: 41235

I voted for the wireless transfer (induction?)- In particular I would love a nit which could be built into a stand and a smaller/cheap reciever that could be installed in several models so I could light something by just putting it on the stand, swapping as I felt like it. I have to rotate my model...
by Pat Amaral
Sun Feb 08, 2009 3:02 am
Forum: Construction
Topic: flash on kits... acceptable or not?
Replies: 11
Views: 9497

A lot of folks who produce resin kits actually take the time to knock off some or all of the flash, when possible, before kits are packed up for sale. I consider that extra attention to detail a customer service thing. They certainly don't have to do that. I assume that some flash is unavoidable. Ho...
by Pat Amaral
Fri Feb 06, 2009 12:29 pm
Forum: Lighting & Electronics
Topic: Checking An LED
Replies: 2
Views: 1678

I kick myself every time the subject of oscilloscopes comes up. :evil: I worked at a technical college a few years ago. They had a pretty nice dual-trace scope from one of the electronics labs that the facilities manager couldn't figure out how to fix. He let me have it so I took it home and opened ...
by Pat Amaral
Tue Feb 03, 2009 7:13 pm
Forum: Lighting & Electronics
Topic: Heat generated by LED's?
Replies: 18
Views: 10176

For the record, 1/4 watt resisters should be fine for the applications that I described above. The circuits as decribed shouldn't generate much heat at all.
by Pat Amaral
Tue Feb 03, 2009 7:01 pm
Forum: Lighting & Electronics
Topic: Heat generated by LED's?
Replies: 18
Views: 10176

You didn't say if you have a current limiting resister in line with that LED that's running off 9v by itself. With that much voltage, you're going to need one, otherwise the LED WILL get hot (but only for a second before it quickly burns out :lol: ). You also didn't say what color the LED is. White ...
by Pat Amaral
Fri Jan 30, 2009 1:03 pm
Forum: Lighting & Electronics
Topic: newbie lighting question
Replies: 13
Views: 6110

Here's my suggestion for a simple "geting started" lighting gig. I slapped together an ST Nemesis Scorpion just to do a lighting test and got passable results. It just has two blue and two amber (yellow) LEDs running off a 9v battery. This was a while ago so I'll have to tear it appart to ...
by Pat Amaral
Fri Jan 30, 2009 11:29 am
Forum: Finishing
Topic: Hydrogen dioxide?
Replies: 10
Views: 5778

I'm definately no expert here but this whole mixture seems counterintuitive to me. I use Windex to strip Future when things don't go as planned. I understand the benefits of using Windex to encourage acrylic paint to flow better from an airbrush and I'm assuming he would have used a very small amoun...
by Pat Amaral
Fri Jan 30, 2009 2:15 am
Forum: Finishing
Topic: Hydrogen dioxide?
Replies: 10
Views: 5778

I think he meant water (H2O). I believe the Windex is to cut the surface tension and make it all flow better. I could be wrong.
by Pat Amaral
Thu Jan 29, 2009 5:28 pm
Forum: Construction
Topic: Cutters/nippers
Replies: 3
Views: 1812

I've been using one of these for the past couple years now. Probably the same thing. Even though you're supposed to be ABLE to cut wire with them, if you plan to use it to cut sprue, I recommend using it ONLY to cut sprue. Cutting wire eventually dulls the blades but mine is still shiney and sharp s...
by Pat Amaral
Mon Jan 26, 2009 7:21 pm
Forum: Lighting & Electronics
Topic: Need battery holders for 3 x AAA cells
Replies: 3
Views: 4535

How about this?
(google searched 4.5v AAA battery holder)
I also found a couple auctions by a wholeseller in Hong Kong on ebay.
by Pat Amaral
Wed Jan 21, 2009 12:11 pm
Forum: Lighting & Electronics
Topic: Free Virtual Breadboard software?
Replies: 2
Views: 3946

There are a number of programs available on this site for free. A couple of the circuit design apps look promising. I ordered the CD a few months ago but I haven't had a chance to really play with it. I wanted it so I could try out the PCB layout programs. Most of the applications are engineering le...
by Pat Amaral
Tue Jan 20, 2009 2:05 am
Forum: Lighting & Electronics
Topic: Random LED Failures
Replies: 11
Views: 4342

The problem could actually be much simpler. If you spend too much time with the soldering iron actually in contact with the LEDs' leads, you run the risk of causing heat damage which can shorten the little guys' lives. An LED is actually a tiny junction between two chemicals which are usually very s...
by Pat Amaral
Mon Jan 19, 2009 5:13 pm
Forum: Lighting & Electronics
Topic: LED Chaser -- IN REVERSE?
Replies: 16
Views: 7852

I mostly agree. You will need 2 of the 4049s, though. Remember that the 4049 outputs are only rated for 5ma max. Yeah, I forgot to mention that. You need one inverter (not gate) per output from the counter. Since the 4049 only contains six inverters (that's why it's called a hex inverter) and your ...
by Pat Amaral
Mon Jan 19, 2009 2:03 pm
Forum: Lighting & Electronics
Topic: LED Chaser -- IN REVERSE?
Replies: 16
Views: 7852

I'm not sure of the proper connections but you should be able to put a hex inverter (4049 chip) on the output of the counter (U2 in the circuit you linked to). The inverter will tell the LEDs to turn off then the counter says "on" and vice versa. I believe that will accomplish what you're ...
by Pat Amaral
Fri Jan 16, 2009 4:52 pm
Forum: Finishing
Topic: Problems with spray on Testors paint
Replies: 9
Views: 6611

I've experienced the effects you're describing when I've used old cans (I mean a couple of years). I've had unused rattle cans of Testors paint (two or three years old) that have had no problems but, sometimes if the can has been used, and then let sit for a long time, the propellant apparently leak...
by Pat Amaral
Tue Dec 16, 2008 1:42 am
Forum: Construction
Topic: How to properly pin a part! (Say that three times fast!)
Replies: 7
Views: 4067

Here's what I do: Get the mating surfaces of the two parts to be joined as smooth and gap free as you can. Then place a generous drop of paint in the spots where you want the pins to go on one of the two mating surfaces. Next, carefully dry-fit the two parts together, making sure the drop of paint o...
by Pat Amaral
Tue Dec 02, 2008 12:43 pm
Forum: Lighting & Electronics
Topic: Some questions regarding a Christmas light circuit board
Replies: 7
Views: 3969

My guess it those boards weren't meant to drive LEDs. I doubt that chip is anything more than a custom brute force sequencer and the transisters are there to provide isolation for the four series strings. Since the chip is probably built to run off 110v rectified, it probably wont function on anythi...
by Pat Amaral
Mon Dec 01, 2008 5:26 pm
Forum: Lighting & Electronics
Topic: Torpedo firing circuit
Replies: 36
Views: 30881

MillenniumFalsehood wrote:There's a much cheaper lighthouse kit for model railroaders available somewhere that seemed like an ideal cheap way to get a phototorp launcher, but the site it was on escapes me.
Is this what you're talking about?
by Pat Amaral
Mon Nov 10, 2008 12:50 pm
Forum: Lighting & Electronics
Topic: 1/350 scale NX-01 ENTERPRISE {lighting}
Replies: 8
Views: 11394

Here's another alternative. It was designed specifically for the 1/350 NX-01 kit. Still could be kinda spendy for 3 kits but I have this one and it's worth every penny.
by Pat Amaral
Sat Nov 08, 2008 4:20 pm
Forum: Construction
Topic: vacuform kit advice
Replies: 15
Views: 7402

I was afraid you were going to ask that :D To be honest, I never actually used it myself but the idea is to fill the voids inside the model to add structural strength. Build up the major components of the model, allowing a small hole at one point and at least one or two holes in another, in an oppos...
by Pat Amaral
Sat Nov 08, 2008 1:22 pm
Forum: Construction
Topic: vacuform kit advice
Replies: 15
Views: 7402

All I can say is careful cutting/edge sanding will be your friends and expanding foam (from a hardware store) will be your ally

Good luck
by Pat Amaral
Thu Oct 30, 2008 3:19 pm
Forum: Lighting & Electronics
Topic: Good window filler?
Replies: 10
Views: 7149

I use Microscale Industries' Micro Krystal Klear. You can pick it up at just about any well stocked hobby store. It's also great for gluing canopies.