LK-AD
1.Future new designation of the LK-AD:
2. Description of the LK-AD:
With its Malleable initial consistency (modelling clay), the M70 can be easily applied on vertical or overhead surfaces.
The final impression is Semi-Flexible (70 Shore A hardness). Therefore, its capacity to be stretched and deformed is very low, and it acceptsonly 5% removal constraint.
That is why it is recommended for taking sectorial impressions of external simpleforms :
But the LK-AD can also be used to precisely fix and maintain small or fragile parts before any kind of process : measurement on a CMM, laser marking, machining etc…
3. Measurement of the LK-ADimpression:
The impression is hard enough to be controlled with or without contact, using a traditional measuring instrument (profile projector, caliper, microscope, surfacemeter…).
But the best way to control it is to use thePLASTIFORM Twin Blade Cutterto create a slice, and measure the dimensions of the slice on a profile projector.
What is the Removal Constraint ?
When making a complete replica casting, some internal complex forms can make it difficult to remove the impression from the mould : groove, thread, undercuts, internal angle…
It is called a Removal Constraint (or backdraft), and is calculated with the following formula :
When this percentage is :
- 0%: No Removal Constraint, the impression will be easy to remove = It is a Simple Form.
You can use a Semi-Rigid or Rigid PLASTIFORM. - 0% to 10%: Small Removal Constraint, the impression needs to be stretched = It is a Little Complex Form.
You can use a Semi-Flexible PLASTIFORM. - 10% to 40%: High Removal Constraint, the impression needs to be highly stretched = It is a Complex Form.
You must use a Flexible PLASTIFORM.
The LK-AD only accepts 5% Removal Constraint !