loss of detail:
1) The wax or resin model will be printed from that file by the 3D Printer.
2) Then casting of the wax into metal to becomes a master
3) Filling the master
4) Then fabrication of the mold
5) Then casting of the final piece
6) Then filling with sandpaper
7) Then polishing and plating

There is a loss of detail at each stage of this process since the engraving is already there from 3D Design. It will NOT be as sharp as an engraving made by laser on the master.
Nevertheless engraving in 3D file will be the best option for large text or large pattern because the loss of detail becomes negligible and the " floor of the engraving " will be flatter and will present a better surface than a costly laser engraving on the master.
* For large text or large patterns we might want to apply a sandblast effect on the surface at the bottom of the engraving to create an even texture. The reason for this is that deep engraved areas are difficult to reach with hand tools for clean or polishing without damaging the outline of the engraving.

Text Restrictions:
The text should be big enough. If the size of the text is small then avoid fonts that are too thin, we might have to use a simple font like "Arial".
You can find fonts here:
- https://www.dafont.com/
- https://www.fontsquirrel.com/

Pattern/logo restriction:
RP printing Machine
(3D intricate designs presenting details in 2 or 3 axes):
- The smallest line engraved or distance between 2 lines should be 0.35 mm to obtain sharp text or drawing.

CNC printing Machine
(Rings with details on the outside only or object with unidirectional details 1 or 2 sided):
- The smallest line engraved or distance between 2 lines should be 0.35 mm to obtain sharp text or drawing.

Solid scape printing Machine
(Economical for very flat object, becomes very expensive on high objects because very slow) :
- Very effective machine for portraits, textures, and detailed reliefs.
- The smallest line engraved or distance between 2 lines should be 0.15 mm to obtain sharp text or drawing.
- The restriction is only for text or thin sharp lines and is not due to the resolution of the machine but more related to the mold and to casting. A deep thin line will have its negative on the mold represented by a thin raised border/wall which than break after a few injections. The wax might not reach or fill the entire gutter in the mold and same for the meal at casting which will result in incomplete casting, line interruption or line disappearance at polishing stage.
- No restriction for textures, portraits and other detailed raised or recessed reliefs apart from the fact that polishing will reduce the level of the details on Silver more than in gold products. So we might in certain cases avoid polishing too much, leaving the deepest cavities unpolished which can actually enhance the definition and contrast in a positive way.

Cold Silicon transparent Mold
For best result in casting very detailed lines, text or textures we might want to use a Cold Silicon Mold.
Such molds are created directly from the printing wax/resin so we will jump the Master (casting and cleaning) to reduce the steps and the losses of details.
- Such molds are a little more expensive (about 50%), but we have saved the step of the master in the costs..
- Cutting and opening the mold will most likely break the wax (which does not happen when opening a mold from a master in metal). So most likely we cannot re-adjust details on the wax for further corrections after the mold is made.
- No correction can be made to the master (because no master) meaning that in case of imperfection we have to reprint the wax from 3D (additional cost) and redo a new mold (additional cost).
- The Cold Silicon Molds have a shorter lifetime even if left unused (6 months - 9 months). Production of multiple injections of hot wax will accelerate this effect.

Impact on cost:
- This engraving is done only 1 time from the wax model
- Tracing and raising into 3D relief is included in 3D Design Cost.
- If the tracing in vector file (file with *.ai extension, Illustrator) is provided by the customer and is technically valid (line thickness, spacing, no cross over and closed lines only) then the 3D Design cost will be lower.


loss of detail:
1) Fabrication of the mold
2) Then casting of the final piece
3) Then filling with sandpaper
4) Then polishing and plating

As we can see there are less steps causing losses of details than to have the engraving included in the 3D Design..

Text Restrictions:
The text should be 1 mm minimum. If the size of the text is small then avoid fonts that are too thin, we might have to use a simple font like "Arial".

Pattern/logo restriction:
The smallest line engraved or distance between 2 lines should be 0.15 mm to obtain sharp text or drawing.
If very fine the mold will not be able to produce many pieces and the master will be used to produce more molds as the production goes.