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http://www.siamcasting.com/casting_problems.html
Jewellery Trouble Shooting Casting problems : Problem: Cause: Remedy: Flashing or Finning : Incorrect powder/water ratio (too much water) Use correct amount of water (especially important with vacuum investing machines) Work time of investment too long. Slurry start to set while still under vacuum.
https://www.superbmelt.com/guide-to-cast-top-quality-jewelry-problems-and-solutions/
In the casting of models for the production of jewelry, a major problem being faced by producers often has to do with the occurrence of various forms of defects. These defects take place at difference stages of the production process and a source of revenue loss.
http://technical-articles.hooverandstrong.com/wordpress/improving-your-silver-casting/
Casting problems with sterling can be classified into two general categories. The first includes problems encountered with all jewelry alloys. The causes of these problems are associated with all operations prior to melting: model-making, in- vesting, burnout, etc.
https://www.gemsociety.org/article/lost-wax-casting/
A model material that leaves any residue will cause problems with the cast piece, anything from an unsightly blob to a loss of details. An amazing variety of wax types are available from supply houses and online. There is wax that can be filed and water-soluble wax for hollow forms.
https://forum.formlabs.com/t/casting-issues-with-jewelry/15222
Oct 14, 2017 · We have been trying to troubleshoot some jewelry casting issues and I’m hoping someone here may have some suggestions. We have a Form 2 and use the castable resin. We have a new cartridge and resin tray and the prints have been coming out very clean. We cure under UV light for 8-12 hours. We use R&R plasticast investment and employ a centrifugal casting method. I am …
https://www.ganoksin.com/article/identifying-and-preventing-wax-defects/
For casting, in particular, manufacturer spend much time and money diagnosing defects that are believed to originate in the casting process, but actually occur during waxing. Many companies run in circles, changing this gate/sprue, that metal, these temperatures, and screaming at suppliers to try to fix the “mystery” problem.
http://technical-articles.hooverandstrong.com/wordpress/problem-solving-in-the-casting-room-2/
In order to isolate and solve a casting problem, the caster must employ a practical problem-solving approach. Speed is of the essence, because downtime costs money. As an example let’s say a good customer calls up to say he’s just discovered that 200 rings you’ve cast have unacceptable porosity.
https://orchid.ganoksin.com/t/casting-silver-ingot-problems/41072
hi there, In last few days I got problems with making a good sheet of Sterling silver. I am using Hoke torch with oxygen and propane. Casting into 4" wire/sheet combination steel mould. Ok, so I bought my new Hoke torch, cast few ingots and they were OK. I cast another ingot to make a sheet and it looked good. After rolling it down to about 1mm of thickness and annealing it "bubbles" appeared ...
https://jewelrydesigns.com/jewelry/jewelry-making/jewelry-casting/
Jewelry casting is an art form that has been in existence for thousands of years. Since the time that man attained the ability to melt metal, artisans have been pouring molten gold into cavities shaped in stone, plaster, sand, and cuttlefish bone.
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