Laminated Object Manufacturing (LOM) is a solid-based rapid prototyping process that uses adhesive-coated sheets of material like paper or plastic. The LOM process involves using a laser to cut the sheet material into layers according to a 3D model, stacking the layers and adhering them together using heat and pressure to build a prototype. Some key advantages of LOM include its ability to produce large prototypes, low material costs, and wide variety of usable materials. However, LOM also has limitations like requiring decubing of parts and not being suitable for complex geometries.

1. SHREE L.R. TIWARI COLLEGE OF
ENGINEERING
 NAME: MANI M SINGH
 ROLL NO: 36
 BATCH: A- 2
 BRANCH: B.E (MECHANICAL)
 SUBJECT: CAD/CAM/CAE
 TOPIC: LAMINATED OBJECT MANUFACTURING
 SIGN:

2. LAMINATED OBJECT
MANUFACTURING-(LOM)
LOM is the solid-based Rapid Prototyping system.
It is used to create low cost 3D model using laser.
Printers use this technology to generate 3D image.
 In this process, a thin sheet or laminate coated
with adhesive on one side is used as a material.
The most common materials used in LOM are
thermoplastics such as PVC; Paper (.002-.02inch);
composites (ferrous metals; Non-ferrous metals;
Ceramics).

3. COMPONENTS OF LOM-SYSTEM
Pre-processing computer.
LOM system computer.
Control unit.
Optical scanning system.
CO2 laser.
Supply roll.
Take-up roll.
Heated press roller.
Build platform.

4. DIAGRAM OF LOM SYSTEM

5. BASIC LOM-PROCESS
The process is performed as follows:
1. Sheet is adhered to a substrate with a heated
roller.
2. Laser traces desired dimensions of prototype.
3. Laser cross hatches non-part area to facilitate
waste removal.
4. Platform with completed layer moves down out
of the way.
5. Fresh sheet of material is rolled into position.
6. Platform downs into new position to receive
next layer.
7. The process is repeated.

7. ADVANTAGES OF LOM-PROCESS
 Ability to produce larger-scaled models.
 Low material cost.
 Wide variety of materials.
 Fast and accurate.
 No additional part supports are required.
 The parts produced by LOM process does not require
post curing.
 Environmentally friendly technique.

8. LIMITATIONS OF LOM-PROCESS
 Need decubing which requires a lot of labour.
 Requirement of precise laser control.
 Produces smoke and fumes (fire hazard).
 Not ideal for making complex geometries (hollow
and thin walled parts).
 Limited strength of parts.
 Not used to create functional prototypes.

9. APPLICATONS OF LOM-PROCESS
 Medical applications : Models of human organs like
bones ,skull, etc. for study purpose.
 Prepare Patterns for sand casting , investment
casting and rubber moulding.
 Produce highly accurate prototype for marketing
purpose.
 Produce functional models in low stress
environment.