Arnica: Ouch!

Dagnabit. I can't believe that such a minor injury threw off my work schedule today. I cut a big gash in my right thumb, about an inch in length and fairly deep -- probably a bit more than 1/8 inch at its deepest point. And, naturally, I got it doing something fast and stupid. I had just finished pouring some Arnica buildings and had prepared lunch -- a simple can of soup -- and noticed that the garbage needed to go out. It was overflowing the can, so I reached in to push is down and sliced open my thumb on the soup can lid.

Like most deep cuts, it didn't hurt much for a second, but then the blood came gushing out. I let it bleed then washed it and wound up applying direct pressure for about 10 minutes to get it to stop bleeding. I then washed off the caked blood -- which started it bleeding again -- but finally got it all under control about 30 minutes later. Oh, and I cleaned up the blood on the floor, too.

It hurts a bit, but the problem is that it's in a bad place on the side of my thumb in a place that is used to grip tools, pencils, and other items. So when I tried to get back to work an hour later, I just opened it up again. Since I'm not on the TV show Chopped, I don't need to work with a latex glove to hold the blood while I'm working, so I finally just called it quits for the day.

I'll get back on things tomorrow, as I can already tell that it is not likely to reopen again. But, alas, I am more than a half-day's work behind.

BTW: No, I won't post a picture of it. I've been told such things gross people out.

Coming Soon
Rather than just spend the whole column complaining, here's a photo from the upcoming tutorial on how to assemble one of our Gunsmith Shops. The key is to put the front and back on the outside and put the side walks flush with the other two.

Gunsmith Shop: Under Construction

I'll clear it all up in the tutorial that takes the building from kit pieces to finished, painted building. That probably won't make it here on Thursday, but sometime in the future. Remember, you can buy this (and other) buildings at: www.arnicarealestate.com.

See ya Thursday

Arnica: Sneak Peak Behind the Scenes

Not much time for blogging today. I'm busy pouring resin to fill orders, as you can see from these pictures of what I poured last night.

Here are the molds filled with tan resin on my work table last night. As you can see from the empty cups, I poured four cups of resin,. Each cup is 300 grams, so that means I poured 1200 grams of resin. That's about 42 ounces of resin, or about 2.5 pounds.

Here's the rest of what I poured. Today I will de-mold them and then store the pieces until I can sand them, which will probably be on Sunday. My goal is to pour about this much again tonight. In fact, I'm off Friday, so I will probably do an afternoon pour of roofs and extra bits that we like to keep on hand.

See you back here Tuesday

Started working on new material...

I, for one, am very excited that my "day job" schedule has changed enough that I will be able to shift energy back to the various Hawgleg projects we've had sitting on the back burner.

Upcoming work includes:

• Gutshot: Night of the Living Deadwood
• Showdowns & Shootouts
• Draw RPG

Coupled with some upcoming changes to our back-end practices (scheduling, accounting, etc.), things are definitely looking up to make 2012 a very exciting year for us. Keep checking here, and at our website, for more updates.

www.hawgleg.com

Arnica: Vacuum Chamber Report

As many of you may recall, we recently bought a 3-gallon vacuum chamber for degassing resin and silicone rubber. I just thought I'd give you a quick report and let you know that I'm VERY happy with this purchase.

RESIN
We're using both 5-minute and 10-minute curing resin, and so far I'm thrilled with the results. I can mix as aggressively as I want without fear of working air into the mix. Once it's all mixed (and looking quite milky), I pop it in the chamber and in less than 3 minutes it rises (bubbling ferociously), then collapses back down. Then it quickly starts a rolling boil (this happens when the chamber achieves a complete vacuum registering -30 inches), at which point I turn it off and slowly let the air vent back in. I remove the lid and my resin looks like crystal clear honey. I'm amazed at how clear it is. I pour it into the molds, run a thin stick or blade through some very tight spots (the cross bar on windows, deep & thin areas around door frames) and then sit back and watch it quickly cure. When I demold, there are no bubbles against the surface, and very seldom any on the back.

SILICONE
The resin is nice, but this is what I really bought it for. I'd been having lots of trouble with bubbles in my silicone. Right now I'm using silicone with a 45-minute pot life, so I've got plenty of time to pour, mix, and pour on the master, and mix more if I need it. Again, I can mix as aggressively as I like. I've tried using an electric mixer, but have not been satisfied with the results.

Now, the resin only doubles in size during the degassing process, so I can really do a lot if I want to (but I don't because I like to take my time pouring). But the silicone more than triples its size. Since I'm using 16-oz disposable plastic cups right now, I've found that I can put in about 130-140 grams of rubber and catalyst. More than that risks a serious mess because the rubber would overflow the container. Even at this amount I've occasionally had to vent the chamber (open the valve to let in a little air) to keep it from overflowing.

I'll tell ya, when the silicone is degassing, it's incredible to watch. It looks like some sort of mutant alien sponge that throbs and pulses with something that looks like it's got a heartbeat. It's really creepy looking, but in a cool way. If I were filming a movie, this is exactly what I would use for some sort of alien life form.

When it's degassed, I add I carefully pour it into the corner of the prepared mold box. Following a variety of advice I've received (including Michael over at www.moldmakingsilicone.com), I take the time to carefully brush the rubber over the master, pushing the rubber into thin and tight spaces. I also work it up in corners and other tight locations. Once I'm sure I've done a good job of pushing the rubber into the details, I think add more rubber. Because I'm using 45-minute pot life rubber, I can easily pour a second (or third) cup of rubber, degas it and then add it to the mold box. This helps me get the proper thickness I want for each mold.

So far, the molds have been amazingly bubble free. In fact, I've only seen three bubbles so far, and I know they came from me pouring the rubber too fast.

I know many of you have not had problems with bubbles, and there's been some speculation that I'm getting them because I live in a very humid part of Texas. I also know that $400 is an expensive tool for anyone's budget. But the fact remains, so far I'm thrilled with the vacuum chamber we bought and I fully believe it will pay for itself by helping prevent bad molds and bad resin pours.

By the way, if you're interested in looking at the vacuum chamber we bought, here's a link to the seller on ebay:
http://shop.ebay.com/pvac-1526/m.html?_nkw=&_armrs=1&_from=&_ipg=