First casts curing as we speak....

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warreng8170

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Feb 6, 2008
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454
Location
Denver, NC
Went out yesterday and bought a few starter supplies. Castin' Craft and Pearl Ex from Michaels and Hobby Lobby (using the 40% off coupons). Paper cups and "popsicle" sticks from WallyWorld. I was also able to pick up a toaster oven for 3 bucks at the local Goodwill. Nobody had the mold trays in stock so I used an idea I saw here a while back. I used one of the drawers from a small parts bin.

I went out to the shop today and started to work. I used the toaster oven to heat an aluminum pan with water. I placed the cups of pure resin in the warm water to lower the viscosity. I didn't want to invest in any kind of vibrating unit just yet, so I just improvised. I used a set of hair clippers and set them on top of a box along with the warmed resin. I mixed in my pigment first and then the catalyst. The clippers did an amazingly good job of getting the bubbles to the top.

One the first pour, I was hoping to wait until they started to thicken and then pour them together, mixing them during the pour. Unfortunately, one of the colors gel'ed WAY faster than the other and it caught me off guard. I ended up trying to mix what seemed like a wad of gum with a cup of syrup. I'm pretty sure this resulted in some air pockets, since when I was trying to mix them, I had to basically "tear' the one that was already gel'ed. We'll find out how bad once I cut them down and turn them round.

Being the impatient person that I am, I couldn't wait to do another pour. The second one went better and I watched the reactions much closer. I probably ended up pouring them a little too early, but I was afraid of repeating my first mistake. They seemed to mix well and hopefully still maintained a little separation.

Both pours are curing now and I'll be going out after while to bake them a little. I'll try to post some before and after pics when they are all done.

Thanks to everyone on this forum for sharing all your experiences and knowledge. I was surprisingly confident going in to this based on the numerous posts that I have read over the last several weeks.
 
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I don't use an oven I just pour outside and let it sit in the 120 degree heat we have here rock hard ultra fast lol
 
Here are the results. They cured with no problems but I may have been able to get away with slightly less catalyst. They cured extremely fast, but they are also pretty hard and slightly brittle. They chipped pretty bad when first rounding them off/. Definitely not going to be able to get "ribbons" while turning these.

Oh well, I'm pleased with the results as a first attempt. I've enough resin for 3 more pours at this size so I can try some different mixtures.
 

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Yeah, they seemed to come out pretty good, considering...! That is one of the good things about this type of castings, even the biggest mistakes can produce the most amazing results, the problem is always...,can you do it again and again if you want too...???:wink:

That or do like I do, never try to do the same thing twice, that solves that problem, huh...???:)

Other one hooked good and proper...!:biggrin:

Cheers
George
 
Great looking blanks Warren and I see you have the addiction well in hand. Now for the real question.....Did you start a log book of your casting endeavors?

Time, Temp, Humidity, Mold size, Pigment qty., Dye qty.....etc? I record everything possible and this is a way for me to keep track of successes and failures.

You never know when you might have a repeat cast.

Dave
 
Great looking blanks Warren and I see you have the addiction well in hand. Now for the real question.....Did you start a log book of your casting endeavors?

Time, Temp, Humidity, Mold size, Pigment qty., Dye qty.....etc? I record everything possible and this is a way for me to keep track of successes and failures.

You never know when you might have a repeat cast.

Dave

I've got good notes for everything except humidity. I had to guess since I don't have a good hygrometer yet. The weather was turning quickly from hot and humid to thunderstorms which cooled everything off.
 
They look great from here! :)

How much catalyst did you use ? I'm not sure how it varies by location but I have had good luck using 3 drops per ounce of resin.:)
 
They look great from here! :)

How much catalyst did you use ? I'm not sure how it varies by location but I have had good luck using 3 drops per ounce of resin.:)

Going by the back of the can, the recommended amount was 4-5 drops per oz. The total pour was 6 oz, so I split the difference and went with 27 drops. Considering how fast it cured and how "chippy" the balnks are, I will definitly go with less next time. Somewhere 3-4 per oz. I really want to get that butter-y smooth cut that I get with Jonathon's (Brooks803) blanks.
 
I've had the same problem with my PR blanks. Anyone have a suggestion as to the best way to kill the Chippyness (If that is a word)?
 
I've had the same problem with my PR blanks. Anyone have a suggestion as to the best way to kill the Chippyness (If that is a word)?
In general, the less catalyst you use, the less chippy your blanks will be. The more catalyst that is used, the more heat that is generated during the reaction. The reaction requires some heat, but not lots of it. Greater heat equals greater chippyness. So, the trick is to titrate teh catalyst to give you just enough heat.

Someone once mentioned that 'fresher' resin also has an effect, but I don't know that this is correct.
 
Thanks Steve, that was my understanding as well. I do know that while the blanks were curing, they were HOT, I mean REALLLLY hot. I picked up the drawer/mold to move it outside and it practically burnt my hand. I am fairly certain that I can cut back the catalyst significantly and still get good solid blanks.
 
They look great from here! :)

How much catalyst did you use ? I'm not sure how it varies by location but I have had good luck using 3 drops per ounce of resin.:)

Going by the back of the can, the recommended amount was 4-5 drops per oz. The total pour was 6 oz, so I split the difference and went with 27 drops. Considering how fast it cured and how "chippy" the balnks are, I will definitly go with less next time. Somewhere 3-4 per oz. I really want to get that butter-y smooth cut that I get with Jonathon's (Brooks803) blanks.

:biggrin:

Everyone has already given great advice, I'd definitely drop down to 3 drops per oz. Also, Castin Craft PR is chippy regardless of catalyst amount. Check out www.uscomposites.com and look up Silmar 41. Thats what I use. You'd still use 3-4drops per oz with it as well. You can get a gallon shipped to your door (ups only) for around $50. I was actually on the phone with them earlier to place an order and I was shocked at how nice they were. I usually order online, but wanted it to get here a bit faster so I called. I haven't had customer service like that in a very long time. Btw...the blanks look great Warren!
 
I've had the same problem with my PR blanks. Anyone have a suggestion as to the best way to kill the Chippyness (If that is a word)?
In general, the less catalyst you use, the less chippy your blanks will be. The more catalyst that is used, the more heat that is generated during the reaction. The reaction requires some heat, but not lots of it. Greater heat equals greater chippyness. So, the trick is to titrate the catalyst to give you just enough heat.

Someone once mentioned that 'fresher' resin also has an effect, but I don't know that this is correct.

3 It Is :biggrin:.. I was running 5drops per oz and noticed the heat as well. Heck with the heat we are having in south Texas I wonder if 1 drop and then placing it on the black tar in the driveway would work:eek::eek:. Just joking!:)

thanks Steve:)
 
Thanks Jonathon. I figured Silmar41 is the way to go in the long run. I just wanted to try it out with something I could get locally.

Just so you know, I blame you for this. I have turned a hundred or so cast blanks up til now, but your's really inspired me to start making my own. Columbia is not an out-of-the-question drive from Charlotte. Next time you do a demo somewhere, I just might make the trip.
 
I usually order online, but wanted it to get here a bit faster so I called. I haven't had customer service like that in a very long time. Btw...the blanks look great Warren![/quote]


I did this as well today. I talked to a very nice lady from there. Was very informative too. Guess from now on i'll just call them.
 
Not quite sure yet. I am leaning toward Cigars. Since these are my first casts, I'll be keeping them for myself. I tend to prefer Cigars for my personal carry pens.
 
Thanks Jonathon. I figured Silmar41 is the way to go in the long run. I just wanted to try it out with something I could get locally.

Just so you know, I blame you for this. I have turned a hundred or so cast blanks up til now, but your's really inspired me to start making my own. Columbia is not an out-of-the-question drive from Charlotte. Next time you do a demo somewhere, I just might make the trip.

Hey I'll take full responsibility! I've created many monsters in the casting world :devil:

Whatcha doin this Sat? I'm actually doing a demo in Atl for the georgia chapter meeting. There are some people driving in from all over to come to it. Something to consider! Happy casting
 
Man that stinks. I'll be headed the other way. Flying out Friday for a weekend with some friends in Boston. I'll have to wait until next time.
 

:biggrin:

Everyone has already given great advice, I'd definitely drop down to 3 drops per oz. Also, Castin Craft PR is chippy regardless of catalyst amount. Check out www.uscomposites.com and look up Silmar 41. Thats what I use. You'd still use 3-4drops per oz with it as well. You can get a gallon shipped to your door (ups only) for around $50. I was actually on the phone with them earlier to place an order and I was shocked at how nice they were. I usually order online, but wanted it to get here a bit faster so I called. I haven't had customer service like that in a very long time. Btw...the blanks look great Warren!

Jonathon, is the Silmar 41 white? I was always thinking PR is clear all the time.

For some reason I was thinking you used Alumalite instead too.
 

:biggrin:

Everyone has already given great advice, I'd definitely drop down to 3 drops per oz. Also, Castin Craft PR is chippy regardless of catalyst amount. Check out www.uscomposites.com and look up Silmar 41. Thats what I use. You'd still use 3-4drops per oz with it as well. You can get a gallon shipped to your door (ups only) for around $50. I was actually on the phone with them earlier to place an order and I was shocked at how nice they were. I usually order online, but wanted it to get here a bit faster so I called. I haven't had customer service like that in a very long time. Btw...the blanks look great Warren!

Jonathon, is the Silmar 41 white? I was always thinking PR is clear all the time.

For some reason I was thinking you used Alumalite instead too.


No silmar is clear. It has a blueish tint but dries clear. I've only tried alumilite once. I may buy a gallon or two to do some WW stuff.
 
Pretty amazing Warren! Would you be able to pass on you color mix for the bronze/silver blank? I grabbed a 32 ct Pearl-Ex samlper off ebay for about $20...not bad for seeing what's good or stinks
 
Brooks803 said:
No silmar is clear. It has a blueish tint but dries clear. I've only tried alumilite once. I may buy a gallon or two to do some WW stuff.

Ah, way off on that assumption. So does one use this stuff to make it white?

Colored Pigment - Titanium Dioxide (White), I found it on some of the Silmar 41 re-seller sites.
 
I mentioned earlier that we were heading to Boston for the weekend. As it turns out, the victory parade was scheduled for Saturday. We figured it would be fun to participate in the festivities. It was pretty amazing. The crowd ended up being estimated at 1.5 MILLION people along a two mile stretch. Lots of fun, great energy and everyone was courteous and respectful. Here are a few shots. I'll post a few more in the casual conversation section.
 

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