Recommended use:
LMC94 is recommended for creating white marks on glass substrates which resemble etched or sand blasted marks. LMC94 dries quickly as a white powder-like coat and is extremely easy to wash after laser marking. This coat can be smudged or wiped off prior to marking, however, so LMC94 should be laser marked shortly after application.

Recommended substrates:
LMC94 material can mark a range of glass substrates. It has previously been used to mark many different types of glass in industrial applications such as vehicle windshields, laboratory instruments, plate glass, and glass ampoules. It can also be used for decorative work on bottles, wine glasses and awards

Lasers that work:
LMC94 works well with both CO2 and solid state lasers. However, solid state lasers generate smoother marks than CO2 lasers. This is related to the possible microfracturing of the substrate due to direct light absorption at the wavelength of operation of CO2 lasers.

Dilution:
LMC94 will need to be diluted differently depending on how you plan to apply it.

• Air brush application: Ratio of 3:1 (3 parts in volume of LMC94, 1 part in volume of denatured alcohol) is recommended (please refer to your air brush manual for information about material thickness for your model type).
  
   
• Foam brush (hand) application: No dilution is necessary for foam brush application. However, if the substance is separated from water due to prolonged sedimentation 5 ml of denatured alcohol per 50g of mixture will make the stirring easier.

For more information on dilution, click here.

Application methods:
Please make sure that the surface to be marked is free and clear of oils, cleaning agent films, dust, and lacquer coating.

• Air brush application: When applying LMC94 from an air brush, the resulting coating should be about 1-1.25 mils thick (~25-30 μm). Spray uniformly at a 10” distance from the surface and move the nozzle from one side to the other covering the whole substrate area. Start spraying away from the area to be marked and move towards the opposite side and past the target area. Over-spraying before and after the target area allows constant velocity of movement and will help provide an even coating on the substrate. Make sure the substrate is not visible underneath. If necessary spray one or two more times.
  
   
• Foam brush (hand) application: When hand applying LMC94 the resulting coating of LMC94 should be 1.25-1.5 mils thick. Use about a 1” wide foam brush and soak less than ¼” of the brush with LMC94. There is no need to soak more than that, otherwise the ink may splash and result in an uneven coat thickness. Apply with smooth, even strokes.
  
  Note: Air brush application is preferred over foam brush application. It can be challenging to achieve the smooth, even coating of laser marking material necessary for optimal marks when using a foam brush. We only recommend foam brush application if you do not have an air brush or are coating a small surface area.

For more information on application, click here.

Drying time & methods:
If left to air dry, LMC94 is normally fully dry within five minutes. If air drying takes too long, however, a hair drier or forced air heater may be used to speed up the process. LMC94 can be fully dried with an average household hair dryer in less than 35 seconds.

Laser settings:
Power and speed are the two most important variables to control when using TherMark laser marking materials with any laser, but there are other relevant variables depending on which laser you are using, such as the focal length of the focusing lens, resolution (DPI), rep rate (PPI, Hz), or hatch spacing (for vectoring mode operation). To read more detailed information on laser settings please click here, or follow the link below to download a recommended settings chart of LMC94 on various substrates.

LMC94 Laser Settings Chart

Product Appearance:
LMC94 is a bright white liquid with a thickness of half &half creamer. It will need to be thinned and stirred prior to use, but will remain white in color after dilution. If sitting for a long time the water and the substance can be separated and the mixture should be stirred vigorously prior the usage.

Once applied to the substrate and dry, LMC94 will be a white powder-like coating.

Shipping options:
LMC94 liquid is a non-hazardous, water-based product and can be shipped via ground or air with no additional charges.

Product storage:
All LMC products should be stored between 40ºF (5ºC) and 95ºF (35ºC) in a dark, dry place.

Disposal:
LMC94 is a water-based material and is environmentally safe and non-hazardous. After laser bonding, any excess, un-bonded material can be washed off the substrate and down the drain into your normal water/sewer waste area.

Unused containers of liquid ink/paste can be safely disposed of in your regular trash and solid waste area.