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glastar inland glass grinder

Buying a stained glass grinder does not have to be a difficult decision. Armed with the right information, choosing a grinder to suit your needs can be easy! To help you with your glass grinder decision, we have compiled this chart comparing various grinder specifications and prices. As the buyer you will have to decide on which options are most important for the work you do. Below the chart, you can read more information about glass grinders, glass grinding bits, helpful grinding tips, and recommendations on accessories.
  All Star G8 Super Star II G12 Diamond Star G14 Wizard IV Wizling CG
Suggested Retail Price $240.99 $179.99 $149.99 $249.99 $139.99
GSGS Price $209.99 $126.99 $108.99 $185.99 $99.99
Manufacturer Glastar Glastar Glastar Inland Inland
Horsepower 1/9 1/12 1/18 1/9 1/22
RPM 3560 3450 3450 3550 3450
Bits Included 1" & 1/4" 3/4" & 1/4" 3/4" 1" & 1/4" 3/4"
Worksurface Size 11"x13" 8"x9" 8"x9" 14.5"x11.5" 9"x10"
Accessories Included Roller-type adjustable straight-edge guide, built-in water pump/mini table, glass face shield, coolant drain, splash guard, accessory drawer Roller-type adjustable straight-edge guide, coolant drain, splash guard, accessory drawer Coolant drain, splash guard, accessory drawer Face Shield, convenient covered accessory tray, reversible work surface, LiftOff reservoir Reversible work surface, LiftOff reservoir
Warranty (Excludes Bits) 5 year 5 year 5 year 5 year 5 year
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glass grinder Stained Glass Grindersare not required for completing a stained glass project, but if you are going to choose stained glass art as your hobby you will definitely want to own one. Grinders can save you time and money. Manually grozing glass pieces is very time consuming, where grinders can achieve the same result in a fraction of the time. When you slide the edge of a glass piece against the grinder bit, it leaves a perpendicular edge. This perpendicular glass edge is extremely important if you want to make top quality projects; it will allow you to install the copper foil evenly to achieve uniform solder joints. Grinders are also excellent at “fine tuning” cuts on difficult shaped glass pieces thus, sparing you costly cutting mistakes. Before you buy a grinder, there are a few things you should know and Global Stained Glass Supply is here to help. Let's start at the top...

Grinder Bits
Glass grinder bits are brass bits with a diamond chip compound coating its surface. Always keep your grinding bits lubricated with water. Adding grinder coolant to the water will help to extend the life of your grinder bitsThere are many different bits available on the market today. Sizes can vary from 1/8” to 1” in diameter. The majority of all stained glass projects can be completed with a small 1/4” bit and a large 3/4” or 1” bit. The smaller 1/4” diameter grinding bit can be used for drilling holes in glass as well as grinding narrow inside curves. Grinder bits also differ by diamond coatings. Bit coatings can be fine, standard, or speed coated. The difference between the types of coating is the size of the diamond particles or “roughness” of the bit. The “rougher” the bit, the faster it will remove glass. These fast grinding bits are called speed bits. They remove glass quickly but tend to leave chip marks along the edge of the glass. Fine bits conversely remove glass slowly and tend not to chip the glass edge. Fine bits are good to use for mirrored glass projects, where you don't want to damage the mirrored coating. Most stained glass projects can be completed with standard coated bits. Here is a tip: Save your old worn out standard bits because they make great fine bits for delicate glass. Most grinders on the market today will accommodate all brands of grinding bits. However, some of the less expensive grinders cannot work with a 1” bit.

Work Surface
The obvious difference between grinder work surfaces is size. Sizes range from 8”x9” to 14-1/2”x11-1/2”. Grinding large pieces of glass is easier on a large work surface because you have more support under the glass. Keep in mind, if you are frequently using a small 1/4” or 1/8” cap bit for grinding, the size of the work surface is not appreciated. This type of grinding is done suspended above the work surface or on a 2nd story worktable that is much smaller in size (pictured below).

glastar mini table universal work surfaceDepending on how much use your grinder gets, work surfaces will eventually wear down as a result of glass sliding across the face. Typically when the surface wears out, purchasing a replacement surface is required. Some grinder manufacturers offer a “reversible” work surface. Grinders with “reversible” work surfaces have the benefit of flipping the surface over and using the other side, extending the life of the work surface.

Horsepower & RPM
Grinder horsepower is a measurement of motor torque. Grinders typically range from 1/22hp (low torque) to 1/9hp (high torque). An application that requires a high horsepower motor is heavy, continuous grinding on thick glass. Most hobby and studio type applications do not require a high torque motor. RPM (revolutions per minute) is a measurement of grinding bit speed. As the RPM # increases, so does the bit spin speed. A faster spinning bit has a more aggressive action on the glass edge. RPM# can range from 3450 to 3560. Differences between grinder RPM speeds are undetectable to most grinder users.

Grinder Accessories
Manufacturers offer different grinder accessories with each model. Some of the most useful ones include additional grinding bits, safety splash shields, and 2nd story work surfaces (for use with cap grinding bits).splash eye shieldSafety glasses should always be worn when using glass grinders. Face shields and splash guards act as an added level of protection and help to contain the water spray from the grinding bit. 2nd story work surfaces or “mini tables” are almost mandatory when using a cap style grinder bit. A cap bit is mounted on top of another bit, so it is removed from the normal lubrication sponge. The “mini table” provides a support surface for the glass and a lubrication reservoir for the cap bit. Most accessories included with the glass grinders can be purchased separately. Keep this in mind when evaluating the costs of each model.

We hope this information on glass grinders is helpful to you and good luck on your next stained glass project!

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