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LINDSAY HAND ENGRAVING EQUIPMENT

Lindsay Classic AirGraver™ with PalmControl™ Impact Per Minute range:  1,500 through 15,000

The Lindsay AirGraver™ is a self-running miniature air engine using no springs or electricity. Just blowing in the handpiece will cause it to run. As this is impractical, the handpiece utilizes one of two types of controllers. One controller is a set of regulators that attaches to an air compressor and a foot pedal. The second option is a PalmControl™ handle that automatically uses the natural palm pressure of the user on the entire handle to control and vary the power of the tool. If a person is accustomed to foot pedal engraving, a few minutes with the PalmControl™ is all it takes to realize the improved responsiveness. The hand is more sensitive than the foot, and capable of subtle corrections. Because the tool is self-contained, there is no need for constant background noise or vibration from a separate power unit.    Above photograph, Barry Lee Hands miniature English scroll engraving with PalmControl pictured next to a nickel.

The Classic AirGraver™ includes a patented ring or barrel around the outside of the tool that works in a manner similar to the focusing ring on a camera lens. The ring is used to simultaneously adjust the impact speed and power of the tool. Either the PalmControl™ or a foot control pedal is used to vary the air pressure power within each setting range. The mechanism makes one AirGraver handpiece as versatile as a variety of different-sized impacting gravers.

Evolution and history of Lindsay AirGravers

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IMPACTS PER MINUTE SPEED RANGE
The Classic  AirGraver comes standard with a stainless piston.  A  Tungsten Dead Blow™ piston can be purchased separately.  Tungsten weighs  approximately 2.5 to 3 times more than stainless and therefore provides more impact power.  The chart bellow illustrates the speed ranges of the Classic handpiece when set at a short stroke, and  when set at the longest stroke by the use of the patented adjust ring on the handpiece. 

	Stainless Piston			Tungsten Dead Blow™ Piston
	Short Stroke	Medium Stroke	Long Stroke	Short Stroke	Medium Stroke	Long Stroke
Idle	2,400	2,400	2,400	1,500	1,500	1,500
2 psi	5,400	3,000	3,000	3,900	2,100	1,500
5 psi	6,600	3,600	2,400	4,500	2,400	1,800
10 psi	7,800	4,500	3,000	6,000	3,300	2,100
20 psi	9,600	6,300	4,200	7,800	4,500	3,000
30 psi	11,100	7,800	5,100	8,400	5,400	3,600
40 psi	12,300	8,700	6,300	9,300	5,700	3,900
50 psi	13,200	9,900	6,400	10,200	6,600	4,200
60 psi	13,800	11,400	6,600	10,500	6,700	4,500
70 psi	14,600	11,900	6,700	10,900	7,000	4,800

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CLASSIC AIRGRAVER
Classic AirGraver Handpiece
Includes the length/speed stroke collar, rapid graver change, a Teflon bore in a 303 stainless body, and a hardened 440C stainless piston, anvil, and nose.  No collects required for rapid graver change.  Also included are three high speed steel 3/32" square graver blanks, a leather handpiece pouch, extra screws, wrench and owner's manual. Requires 60psi regulated compressed air from an air compressor. 

The length of stroke adjustment collar on the Classic handpiece provides a multitude of hand pieces in one tool. At any given stroke length setting,  the power is varied with air pressure from the foot control or PalmControl (.5psi to 60psi). The absence of an internal spring means uniform performance throughout the range, with no sweet spots or  non-working spots.  The full range of power and speed is consistent throughout due to the internal automatic balance of air pressure on both the impact and return strokes.

The tool requires little air volume for operation. 0.1 to 0.3 CFM depending on the depth of engraving or impact operation.   This means the life of an air compressor will last longer and a smaller compressor can be used. 

Optional custom burl wood handle for foot pedal Classic handpiece

The Classic handpiece piston impact speed range
Stainless piston = 2,400 through 15,000 strokes per minute.
Patent pending Tungsten Dead Blow™ piston = 1,500 through 11,000 strokes per minute.
Determine which AirGraver piston is best suited to your needs 

Classic handpiece with supple black rubber handle;  Price $995

Controllers for controlling the Classic AirGraver handpiece
PalmControl™ Handle; Price $1695 (can be used together with a pedal controller if desired)
Foot control, idle adjust and double regulators; Price $249 
Foot control, idle adjust without regulators; Price $189
Custom burl wood handle  for Foot Pedal Classic handpiece $310

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AIRGRAVER FOOT control OPTIONS

Foot control, idle adjust and double regulators; $249  Includes 10 feet with a 1/4"NPT fitting for attaching to air compressor. Auxiliary output for rotary handpiece pedal or PalmControl can be adapted to out going air on the regulator on the right.  The benefit of dual regulators is that is a user can adjust the pressure to the tool if desired without needing to readjust the idle needle valve to the tool.

Foot control, idle adjust without regulators; $189  Many air compressors are already equipped with a regulator and filter.  Use your own regulator with this setup.  Includes 10 feet of tubing with a 1/4"NPT fitting for attaching to air compressor.

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PALMCONTROL™  HANDLE FOR CLASSIC HANDPIECE

The PalmControl™  handle is placed on a Classic handpiece to provide superior impacting control without a foot pedal. It utilizes the hand pressure applied to hold a graver in a cut to vary and control the impacting power of the tool. This process is intuitive. The tool is capable of producing an enormous range of cuts, from fine banknote-style engraving to removing heavy background. It is equally proficient at bright cutting and stone setting. It requires 60 PSI regulated compressed air from either an air compressor or a CO2 cartridge. No electrical connection is needed.

Right: PalmControl is pictured being used with a punch to tap a gold inlay in a rifle.  Photo: Barry Lee Hands

PalmControl Handle with Classic AirGraver includes length/speed stroke collar, rapid graver change, a Teflon bore in a 303 stainless body, and a hardened 440C stainless piston, anvil, and nose. Also included are three high speed steel 3/32" square graver blanks, a leather handpiece pouch, extra screws, wrench, and owner's manual. One Carbalt™ pre-sharpened graver with patented Lindsay point geometry is also included with each customer's first purchase of an AirGraver handpiece. Requires 60psi regulated compressed air from an air compressor or CO2 cartridge.
Handpiece includes length/speed of stroke collar, rapid graver change, three position tubing attachment, Teflon bore and fine finished stainless body. Also included: three High Speed Steel 3/32" square graver blanks, a leather handpiece pouch, extra screws, wrenches, owner's manual and one Carbalt™ patented pre-sharpened graver.

Available with Santoprene rubber ivory color handle or a custom stabilized burl wood handle.   Requires 60psi regulated compressed air from either an air compressor or CO2 cylinder. 

PalmControl Handle with Classic handpiece: Price $2690 (supple rubber Santoprene handle)
PalmControl Handle for Classic handpiece with custom burl wood handle: Price $2890
Regulator and needed fittings to attach PalmControl to an air compressor Price $79 photo
PalmControl CO2 regulator for CO2 cartridges and cylinders $142

PORTABLE CO2 FOR PALMCONTROL

The PalmControl AirGraver can be made portable with the use of a CO2 regulator. Left: PalmControl AirGraver with CO2 regulator and 25 gram CO2 cartridge.

More information about the PalmControl and CO2 operation can be found at EngravingSchool.com

Without an adapter, the CO2 regulator accepts 88 gram CO2 cartridges available from WalMart and paintball stores, at approximately $5 each. These cartridges provide around 1.5 hours of engraving  Link to 88 gram cartridges (also check your local WalMart  paintball section) The regulator ith the 25g adapter  will accept 25 gram CO2 cartridges, which are available from bicycle shops, at approximately $6 each. These cartridges provide about 20 minutes of engraving.   Link to a 25 gram cartridge The regulator with the 567g adapter  will accept the larger paintball CO2 cylinders such as the 20 ounce, 567gram cylinder. These cartridges provide around 8 to 10 hours of engraving. These are refillable at a local paintball store for $3 to $4  Link to a 567gram cylinder CO2 regulator for CO2 cartridges and cylinders $142 25g CO2 adapter for fitting threaded neck 25 gram CO2 cartridges $8 567g CO2 adapter for fitting threaded neck 567gram (20oz) paintball cylinders $38

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AIRGRAVER FOOT CONTROLLERS

Foot Pedal, idle adjust and double regulators; $249  ncludes 10 feet of tubing with a 1/4"NPT fitting for attaching to air compressor. Auxiliary output for rotary handpiece pedal or PalmControl can be adapted to out going air on the regulator on the right.  The benefit of dual regulators is that  a user can adjust the pressure to the tool if desired without needing to readjust the idle needle valve to the tool.

Foot Pedal, idle adjust without regulators; $189  Many air compressors are already equipped with a regulator and filter.  Use your own regulator with this setup.  Includes 10 feet of tubing with a 1/4"NPT fitting for attaching to air compressor. Click photos to enlarge

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Photographs of work of  various engravers, jewelers and artists using AirGravers
Click to enlarge

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The Classic handpiece pistons:
Stainless piston = 2,400-15,000 strokes per minute.
Patent pending Tungsten Dead Blow™ piston = 1,500-11,000 strokes per minute.
Determine which AirGraver piston is best suited to your needs

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45 day trial offer All AirGraver sales include a 45 day trial satisfaction guarantee. There is no better way to find if an AirGraver will help in your work than to try one in your actual work environment. If you are not completely satisfied, return it within 45 days for a full refund minus shipping costs.

Rotary disc foot control option
Use pneumatic dentist-type drills and rotary handpieces  with your impact AirGraver handpiece by adding this foot control to the AirGraver controller. This can tie in with either the FootControl or PalmControl with an air compressor.    

Price $69.00

Lindsay Dual Grit Diamond Lap
Touch-up Graver diamond lap
1/16" thick 6" diameter lap with
600 mesh and 1200 combined on one disc.
Patent Pending

Save time touching up gravers by not needing to constantly change laps.  This lap combines two meshes: 1200 on the outer area and 600 on the inner. 

1200-600 grit diamond lap $68

Lindsay Graver blanks

Tungsten Carbide" Carbalt" 3/32" x 2-1/8"
(.094" +-.0005")
Information about Lindsay Tungsten Carbide

2 pack      $32
5 pack      $75
10 pack    $140

1/16" thick 6" Diameter Diamond Sharpening Laps  
For graver sharpening hones
(will replace laps on sharpeners supplied with 5" diameter laps).

1200 grit diamond lap $44
600 grit diamond lap $56
260 grit diamond  lap $65
100 grit diamond  lap $88

Note: If extra height is needed, these 1/16" plates can be thicken by placing them on an old 1/2" thick lap .  A 1/2" thick x 6" backing plate is available $38.00

M-42
3/32"square x 2-1/2"
(.094" +-.001")
5 pack $38

High Speed Steel
3/32" square x 2-1/2"
(.094" +-.001")
5 pack $30

Variety Square Pack
2 Carbalt blanks
3 M-42 blanks
3 HSS blanks
Price $70

Graver polishing  Apply diamond compound to the back side of a 1/16" thick steel diamond lap (sold above) and use it for polishing graver facets. When a metal lap is used, some of the diamond will embed itself into the steel preventing it from wiping off. This is called “charging” a lap. 

1/4 Micron, 100,000 mesh, 5-gram syringe $25
1/2 Micron, 60,000 mesh, 5-gram syringe $25
1 Micron, 14,000 mesh, 5 gram syringe $25
3 Micron, 8,000 mesh, 5 gram syringe $30
6 Micron, 3,000 mesh, 5 gram syringe $34

Note: The 1/2 Micron is the only one that may be needed for polishing gravers. It cleans up a 1200 grit finish quickly, and leaves a bright finish. If purchasing more than one compound, be sure to devote the backside of a separate steel lap to each.

Custom Engraving Vises

Engraving Microscopes

Air Rotary Handpiece

Silentaire Air Compressor
Super Silent 20-A
Recommended size for AirGravers and/or intermittent rotary engraving.

Specifications:

16"long x  7"wide x 12" high 1/5 HP, 0.4 Gallon Tank 0.7 CFM Free Air 55-85 PSI Op-Pressure Shipping Weight: 40 pounds Voltage: 110 V-60 Price: $635 plus $29 shipping $469 When purchased with AirGraver

Silentaire Air Compressor
Super Silent 50-TC Recommended size for AirGravers and/or continuous rotary engraving.

Silentaire Air Compressor
VAL-Air 50-24-AL
Has coalescing oil filter, cooling fins and built in fan.
Recommended size if using air compressor for other pieces of equipment along with AirGravers.

New Book! 
Inspirational Engraving and other metal working embellishments on Art Knives.

Click the Jacket Cover for information and ordering.

AirGravers have a 45 day trial return and three year parts and labor warranty.