Innovations

← Back
July 27, 2018

Feasibility Studies



Stewart Engineers can help you quantify risks and ensure financial feasibility before investing in glass manufacturing.

Investing in float glass is challenging for new entrants. How can you verify the viability of an idea when there are many small glass importers making gathering market data tricky? There is a broad range of quality, and therefore cost, available in glass industry equipment making a cost benefit analysis difficult.

About Stewart Engineers

Stewart Engineers is a privately held and family-owned company led by glass industry experts. Our company headquarters is in Wake Forest, North Carolina with branch offices in Kyzylorda, Kazakhstan and Altendorf, Switzerland. Les Stewart founded Stewart Engineers in 1986. We have served the glass industry since our inception with engineering and glassmaking equipment.
We have a deep understanding of the glass industry due to our expertise and experience in the glass industry. Our knowledge enables us to complete projects, with thoroughness and accuracy, which companies outside the glass industry cannot.

Our Process

Local
We conduct a market and competition analysis for the local market to determine the market size and competition. Our staff travels to the location to verify the site and market feasibility.

Technical
We develop the technical strategies and solutions for civil and process engineering that best fit the project. After we conduct a feasibility analysis, we can shorten the project timeline because we determine the technical requirements during the feasibility study.

Business
We model the plant performance for five years to understand the initial capital payback period, OPEX, profit and other financial metrics. We also consider risk and consolidate the local data, technical feasibility, and business analysis into a business plan that is used to attract investors and secure financing.

Why Choose Stewart for a Feasibility Study
Accounting firms conduct many feasibility studies, but the results are questionable because they have no process knowledge. Stewart Engineers has a global network of glass partners to determine market data; we design and build high-quality glassmaking equipment, like tin baths and CVD systems, as well as float facilities.
Everyone builds feasibility studies on reasonable assumptions. However, without process knowledge, there is no way to evaluate the reasonableness of the premises. For example, assessing raw material availability is contingent on knowing the glass recipe as well as acceptable quality levels, neither of which is common knowledge.

Stewart Engineers can empower you to make high-quality glass profitably.

Our latest innovations

July 27, 2018

Feasibility Studies


Stewart Engineers can help you quantify risks and ensure financial feasibility before investing in glass manufacturing. Investing in float glass is challenging for new entrants. How can you verify the viability of an idea when there are many smal... Read More→

July 27, 2018

Glass Manufacturing


Stewart Engineers builds high-quality float glass manufacturing facilities around the world. We use our considerable experience in float glass to design and build float facilities that maximize profit. Technologies like the StewartFloat® ... Read More→

June 19, 2018

Make CVD Part of your Future


Glass manufacturers began to use CVD for online coatings in the 1960’s. Pilkington was the first to develop a marketable product, Reflectafloat. Over the lifetime of the product, it was made in both the tin bath and the lehr. Reflectafloat... Read More→

May 07, 2018

History of Glass


How to turn Sand into Glass The raw material from which glass is made is silica, the most abundant of all the earth's minerals. Milky white in color, it is found in many forms of rock, including granite. And as every beach in the world has been for... Read More→

May 07, 2018

Float Glass Cutting and Packing


The final online manufacturing process for float glass is the Cutting and Packing line. The cutting and packing conveyor is immediately downstream of the annealing lehr. It is comprised of special roller sections that are capable of transporting gla... Read More→

May 07, 2018

Float Glass Annealing Lehr


What is a lehr? A glass annealing lehr oven- often just referred to as a 'lehr', is a long, temperature controlled, kiln. Lehrs are typically 6m wide and 120m long, with an adjustable temperature gradient through which the glass passes. In t... Read More→

May 07, 2018

Glass Forming


Forming Technology Flat glass is manufactured using one of three processes: the sheet process, the plate process, or the float process. The float glass process has, almost entirely, replaced the sheet glass and plate glass processes. Sheet Glass Th... Read More→

May 07, 2018

Glass Materials and Batching


Glass contains three major categories of constituents - formers, fluxes, and network modifiers. Silicon dioxide (SiO2), or sand, is used as the former and basic constituent with soda ash (Na2CO3) as the flux. Lime (CaCO3) and dolomite (CaCO3MgCO3) a... Read More→

May 07, 2018

Glass Melting Process


Melting The typical melting furnace is a Six Port Cross Fired Regenerative furnace with a capacity of 500 tons per day. Cross fired regenerative furnaces have been built for very small and very large melting areas. The smallest units may be unecono... Read More→

April 10, 2018

Glass Coating Technology Comparison


A variety of techniques are available to deposit thin films onto flat glass. The most widely used of these for producing high-quality functional coatings can be subdivided into two classes: Physical Vapor Deposition (PVD) and Chemical Vapor Depositi... Read More→