Hi all, Need some advice. Just got a shipment of parts from the company that casts them for me, these are open-pour resin pieces. The parts are pretty bad -...
35557
Mike Jackson
alumicaster
May 2, 2012 3:50 am
Personally, I aim for zero bubbles in my castings. If I get bubbles, I'm doing something wrong and I will not ship the "bubbled" castings to clients. I keep...
35558
alex_bard
May 2, 2012 8:38 pm
Everything Mike said is spot on. I would never let anything leave my shop in the condition you described, regardless of the quality requirements. You should...
35559
wiseshift
May 6, 2012 6:21 pm
Hi, For bubble free water clear epoxy molding (or any other molding), 1) anybody could compare between these 2 methods? (I am not talking about getting the...
35560
Chaz
cybergolem...
May 6, 2012 7:57 pm
I can't speak for ultra-sonic methods since I've never used it (seems like a fancy method of hammering a mold), but my experience says that vacuum-removal is...
35561
bagledman
May 12, 2012 8:07 pm
Hi. I want to create some wall plaques in relatively small volume, say in the region of 20 to 50 per design. The plaques will be round in shape, around eight...
35562
thomasmost@...
emphantasy
May 13, 2012 12:54 am
RTV platinum silicone for molds, any urethane (rigid) or polyester (fiberglas) for casting. ... From: "bagledman" <wjc@...> To:...
35563
jarekes2001
May 13, 2012 1:59 am
I'm not sure which is better but from what I have read online I would say more people prefer the results from pressure casting although there does not seem to...
35564
jarekes2001
May 13, 2012 1:59 am
I'm not sure which is better but from what I have read online I would say more people prefer the results from pressure casting although there does not seem to...
35565
thomasmost@...
emphantasy
May 13, 2012 2:35 am
If you de-gas your silicone and let the mold cure at room pressure, then pressurize the mold with the resin in it, you won't have any problems. It's only when...
35566
thomasmost@...
emphantasy
May 14, 2012 2:36 am
For anyone interested, I have a 12 gallon pressure pot for sale, $500. [Non-text portions of this message have been removed]...
35567
doc
torobots
May 17, 2012 2:37 am
... Epoxies might work also. SmoothOn has a line they call Epoxacast. I use the 690 and like it. Very low viscosity and cures to a very hard plastic. But I...
35568
Evyn MacDude
macdudeus
May 17, 2012 3:07 am
... I would look through the various gypsum cements for a project like that. -- Evyn [Non-text portions of this message have been removed]...
35569
bagledman
May 17, 2012 5:05 am
Thanks to the folks for their input on this topic. The product needs to be relatively robust to withstand the rigours of being kicked around the postal service...
35570
thomasmost@...
emphantasy
May 17, 2012 4:54 pm
Then I'd use an elastomeric (flexible) urethane rather than rigid. ... From: "bagledman" <wjc@...> To: casting@yahoogroups.com Sent:...
35571
Alan
rustaholic777
May 19, 2012 2:13 pm
I guess it is Christmas in May. I had one company that I had been dealing with because they have a location that is just off the freeway I will be on...
35572
threefootrr
May 19, 2012 2:13 pm
I am new to molding/casting and this is my first post and I have a couple questions. To reiterate what you stated earlier, the best approach is to de-gas the...
35573
obscurity123
May 19, 2012 2:13 pm
Wondering what you all do with your uncured silicone when the weather changes... We recently got a spike in temps and I'm concerned about how (if at all) it...
35574
Ted Quick
rim_molder
May 19, 2012 3:25 pm
Silicone rubber has a VERY long storage life. Higher temperature shouldn't affect it much if at all. The only likely change is that it will thicken slightly....
35575
Ted Quick
rim_molder
May 19, 2012 3:30 pm
As I understand it it may help to cast the mold under pressure IF you are going to pressure cast parts in it later. You can use a pressure chamber as a vacuum...
35576
thomasmost@...
emphantasy
May 21, 2012 4:51 pm
Overkill in my opinion- it also shortens the working time you have with the resin. ... From: "threefootrr" <threefootrr@...> To: casting@yahoogroups.com ...
35577
alex_bard
May 23, 2012 4:25 pm
when it comes to rigid clear parts i like to use urethane. Most of the time they are fairly viscus and have a descent pot life. If you are using a pressure pot...
35579
Ainsley
ainsley1012001
May 29, 2012 2:11 pm
Hi guys I'm new to the group, I have been casting or trying to cast in urethane, Model train stuff mostly, but some gaming stuff as well. I would like to learn...
35580
Stephen
ssculptor
May 30, 2012 4:00 pm
I am petty much all confused about the new 3D scanners; so many are coming on the market. I have a question, What is the lowest priced 3D scanner that makes a ...
35581
John McCann
johncharlesm...
May 30, 2012 4:45 pm
I just did a search and this one came up which I remember from Jay Leno’s Garage, the price looks reasonable. http://www.nextengine.com/ Obey gravity, it's...
35582
thomasmost@...
emphantasy
May 30, 2012 5:02 pm
I'd go with the Artec scanner- it's the lowest handheld on the market at $15K. There are some $12K ones coming out later this year, I hear... ... From:...
35583
Dennis
dennisintexas41
May 30, 2012 5:06 pm
If you have a regular digital camera, check out 123D Catch. http://www.123dapp.com You take a series of pictures from all angles, submit them to 123D Catch...
35584
Charles Anderson
charlesian2000
May 31, 2012 6:03 am
The examples work really well. When you try to do them yourself it's not that easy. You need a butt load of pictures, they have to have the same light level ...
35585
Mike Bauers
mwbauers
May 31, 2012 10:07 am
Since you'll be out in the field, You'll find that it will be easier to use a locked monopod. It is much easier to use out in the wild and gives you almost all...
35586
bagledman
Jun 3, 2012 12:31 pm
Hi. Have just got into making two piece moulds in RTV silicon rubber and have discovered parting lines, which isn't something I'd particularly considered...
