Oliver 6905 User manual

Sander
Model 6905
Owner’s Manual
For Models Manufactured Since 11/2017
Oliver Machinery
1-800-559-5065
921 Thomas Ave SW
Renton, WA 98057
[e-mail]
Stock Number: 6905.001
Manual Version: 2.0.2
175381

READ AND UNDERSTAND ALL INSTRUCTIONS IN THIS MANUAL BEFORE
ATTEMPTING TO ASSEMBLE OR OPERATE THE MACHINE.
FOLLOW THE INSTRUCTIONS AND THINK SAFETY!
THE OWNER OF THIS MACHINE IS SOLELY RESPONSIBLE FOR THE SAFETY OF ANYONE USING
THIS MACHINE. SUCH RESPONSIBILITY INCLUDES BUT NOT LIMITED TO:
• PROPER ASSEMBLY, OPERATION, INSPECTION, MAINTENANCE, AND RELOCATION OF
THE MACHINE.
• PROPER TRAINING FOR THE OPERATORS AND ENSURES THIS MANUAL IS AVAILABLE
AT ALL TIMES.
• USAGE AUTHORIZATION.
• USAGE OF SAFETY AND PROTECTION DEVICE.
OLIVER MACHINERY DISCLAIMS ANY LIABILITY FOR MACHINES THAT HAVE BEEN ALTERED OR
ABUSED. OLIVER MACHINERY RESERVES THE RIGHT TO EFFECT AT ANY TIME, WITHOUT PRIOR
NOTICE, THOSE ALTERATIONS TO PARTS, FITTINGS, AND ACCESSORY EQUIPMENT WHICH THEY
MAY DEEM NECESSARY FOR ANY REASON WHATSOEVER.
** SAVE THIS MANUAL FOR FUTURE REFERENCES. **
PROP 65 NOTICE
WARNING: Drilling, sawing, sanding, or machining wood products can expose you to wood dust,
and/or other chemicals that are known to the State of California to cause cancer, birth defects,
or other reproductive harm.
Some examples of these chemicals are:
• Lead from lead-based paints.
• Crystalline silica from bricks, cement, and other masonry products.
• Arsenic and chromium from chemically treated lumber.
Avoid inhaling wood dust and other harmful chemicals. Use a dust mask and/or other safety
devices for personal protection.
For more information go to http://www.P65Warnings.ca.gov/wood

Table of Contents
Introduction············································· 5
Specifications ·········································· 6
Identification ··········································· 8
Safety·····················································10
General Safety Guidelines·························10
Safety Guidelines Specific to Sander··········11
Electricals ···············································13
Minimum Circuit Size Required for Model
6905 Sander ·············································13
Grounding ················································13
Indoor Use Only ·······································13
Electrical Wiring ·······································14
Setup······················································15
Shop Preparation······································15
Receiving··················································16
Inventory ·················································17
Cleaning ···················································18
Sanding Sleeves Installation······················18
Sanding Spindle Installation / Removal ·····19
Spindle and Table Insert Storage···············20
Power Switch Assembly····························20
Dust Collection ·········································20
Operation ·············································· 21
Preparation before Sanding ······················21
Material Selection and Inspection ··················21
Supporting Large Workpiece···························21
Safety Devices ·················································21
Clear the Work Area········································21
Table Tilt Adjustment ·······························22
90° Sanding ··············································23
Bevel Sanding···········································23
Accessories ············································ 24
Maintenance ········································· 25
Changing Sanding Sleeves·························26
Table Angle Stop Bolt Adjustment·············27
Troubleshooting····································· 28
Wiring Diagram ····································· 30
Parts List················································ 31
Maintenance Record······························ 35
Notes····················································· 36
Warranty and Service····························· 37

6905 Sander OLIVERMACHINERY.NET 5|Page
Introduction
Thank you for choosing Oliver! This manual contains important information on how to safely set up,
operate, and maintain this machine. Please take the time to read through this manual, and make sure you
understand all instructions.
While this manual may provide tips on optimizing the result of your workpiece, the manual is not intended
as a substitute for formal woodworking training. If you need to know how to safely complete a
woodworking task, please consult knowledgeable and qualified sources before proceeding further.
We made every effort to keep this manual up-to-date. Instructions, specifications, drawings, and
photographs in this manual should match the machine delivered. If you find any differences or anything
that seems confusing in this manual, please check our website for an updated version:
WWW.OLIVERMACHINERY.NET/MANUALS
Alternatively, you can contact our technical support for help:
1-800-559-5065
Before calling, please note down the manufacture date and the
serial number of the machine. You can find the information on
a nameplate located on the back of the machine cabinet. This
information is needed to provide proper technical support, and
to determine if an updated manual is available for your
machine.
Please let us know how well this manual serves you. If you have
any suggestions, please call the number above or email us at:
[e-mail]
We love to hear from our customers and make improvements.

6 | Page Oliver Machinery 6905 Sander
Specifications
Quick View
Model
6905 Sander
Stock Number
6905.001
Power Requirement
115V, 1Ph, 60Hz
Motor
TEFC 0.5HP, 115V, 1Ph
Spindle Sizes
1/4", 1/2", 5/8” 1-1/2”, 2”
Spindle Speed
1720 RPM
Oscillation Stroke Length
15/16"
Table Dimensions
14-3/4“(W) x 14-3/4”(D)
Table Tilt Angle
0° - 45°
Dimensions
14-3/4“(W) x 14-3/4”(D) x 18-1/4”(H)
Footprint
14-1/4”(W) x 14-1/2”(D)
Fully Assembled Weight
75 lbs.
Warranty
1 Year (Motor and electronics)
2 Years (All other parts)
Product Dimensions
Width x Depth x Height (Fully Assembled)
14-3/4“(W) x 14-3/4”(D) x 18-1/4”(H)
Footprint
14-1/4” (W) x 14-1/2”(D)
Fully Assembled Weight
75 lbs.
Shipment Info
Packaging
Cardboard Box
Content
Sander with Included Accessories
Dimensions
17”(L) x 17”(W) x 21”(H)
Weight
80 lbs.
Approx. Assembly Time
15 Minutes
Must Ship Upright
YES
Stackable
YES
Electricals
Power Requirement
115V, 1Ph, 60Hz
Prewired Voltage
115V
Full Load Current Rating
7.5A @ 115V
Recommended circuit size
15A @ 115V
Power Switch Type
Paddle Switch with Childproof Lock Pin
Connection Type
NEMA 5-15 Plug with 5’ 18AWG Cord

6905 Sander OLIVERMACHINERY.NET 7|Page
Motor
Motor Type
TEFC
Horsepower
0.5HP
Power Requirement
115V, 1Ph, 60Hz
Full Load Current Rating
7.5A @ 115V
Speed
1720 RPM
Power Transfer Mechanism
Direct Drive
Bearing type
Permanently Sealed Ball Bearing
Sanding Spindles
Height
6”
Sizes
1/4", 1/2", 5/8” 1-1/2”, 2”
Optional Spindle Size Available
3”
Speed
1720 RPM
Oscillation Stroke Length
15/16"
Oscillations Per Minute
30
Table
Material
Precision Ground Cast Iron
Dimensions
14-3/4“(W) x 14-3/4”(D)
Tilt Angle
0° - 45°
Number of Table Inserts
2 for 90° Sanding
2 for Bevel Sanding
Safety
Number of Dust Ports
1
Dust Port Size
2”
Minimum CFM Required
300 CFM
Sound Rating @ 2’ distance
70 dB
Others
Serial Number Location
On the right-hand side of the machine stand.
Certification
CSA 175381
Country of Origin
Taiwan

8 | Page Oliver Machinery 6905 Sander
Identification

6905 Sander OLIVERMACHINERY.NET 9|Page

10 | Page Oliver Machinery 6905 Sander
Safety
Oliver Machinery has made every attempt to provide a safe, reliable, easy-to-use piece of machinery.
Safety, however, is ultimately depending on the individual machine operator. Before operating this
machine, please become familiar with the following safety labels and guidelines.
DANGER
This indicates an imminently hazardous situation which, if not avoided, WILL cause
death or serious injury.
WARNING This means if the warning is not taken seriously, it CAN cause death or serious injury.
CAUTION This means if the precaution is not taken, it MAY cause minor or moderate injury.
IMPORTANT This is a tip for properly operating the machine to avoid machine damage.
General Safety Guidelines
1. FAMILIARIZE yourself with all safety instructions found in this manual. Know the limitations and
hazards associated with this machine. Do not operate or service this machine until you are properly
trained.
2. ELECTRICAL GROUNDING, when done properly, reduce the risk of electrocution, shocks, and fire.
Make certain that the machine frame is electrically grounded and that a ground lead is included in the
incoming electrical service. In cases where a cord and a plug are used, make certain that the grounding
plug connects to a suitable ground. Follow the grounding procedure indicated in the electrical code
of your area.
3. DISCONNECT the machine from power before performing any service, maintenance, adjustments, or
when changing cutters. A machine under repair should be RED TAGGED to show it should not be used
until the maintenance is complete.
4. EYE PROTECTION: Always wear an approved safety face shield, goggles, or glasses that complies with
ANSI Z87.1 and CSA Z94.3 standards. Common eyeglasses are not safety glasses, and may not provide
adequate protection.
5. EAR PROTECTION: Use hearing protective devices where the noise exceeds the level of exposure
allowed in Section 1910.95 of the OSHA Regulations. When in doubt, use it.
6. GUARDS: Keep machine guards in place for all applicable operations. If any guards are removed for
maintenance, DO NOT OPERATE the machine until all guards are reinstalled. Check clearance between
the guards and the cutter before starting the machine.
7. WORKPLACE SAFETY: Keep the floor around the machine clean. Scrap material, sawdust, oil, and
other liquids increase the risk of tripping or slipping. Be sure to clean up the table before starting the
machine. Make certain the work area is well lighted and that a dust collection system is available to
minimize dust. Use anti-skid floor strips on the floor area where the operator normally stands and
mark off the machine work area. Provide adequate workspace around the machine.

6905 Sander OLIVERMACHINERY.NET 11 |Page
8. ACCESS CONTROL should be enforced so only trained personnel can access the work area and operate
the machine. Use a childproof power switch when applicable.
9. STAY ALERT at all times. Do not operate this machine while under the influence of drugs/alcohol, or
when not feeling well.
10. NEVER STAND ON THE MACHINE. This prevents injuries from tipping related accidents and accidental
contacts with cutters.
11. REPLACEMENT PARTS: Use only genuine Oliver Machinery replacement parts and accessories
recommended for this machine. Generic parts made by other manufacturers may create a safety
hazard and WILL void the factory warranty and other guarantees.
12. PROPER USE: Do not use this machine for anything other than its intended use. If used for other
purposes, Oliver Machinery disclaims any real or implied warranty and holds itself harmless for any
injury or damage which may result from that use.
13. ADDITIONAL SAFETY INFORMATION:
•National Safety Council – Accident Prevention Manual for Business and Industry:
https://shop.nsc.org/apm-admin-program-14ed
•ANSI 01.1: https://webstore.ansi.org/standards/wmma/ansio12013
•OSHA 1910.213: https://www.osha.gov/laws-regs/regulations/standardnumber/1910/1910.213
Safety Guidelines Specific to Sander
Before Work Begins:
1. Inspect the sanding sleeve for signs of failure. Clean clogged sanding sleeve with abrasive cleaning
stick. Replace damaged, overstretched, or worn sanding sleeves.
2. Ensure the sanding sleeve is held securely on the spindle. If the sleeve has lost grip on the spindle,
refer to the section “Changing Sanding Sleeves” on page 26 to secure the sanding sleeve.
3. Inspect the workpiece. Do not process workpieces with loose parts and/or containing dangerous
chemicals. Do not sand wood with high moisture content.
4. Remove and confine any personal belongings that can get caught and entangled with the spindle.
Remove tie, rings, watch, and other jewelry. Roll up sleeves above the elbows. Remove all loose outer
clothing and confine long hair. Do not wear gloves while sanding. Wear protective footwear.
5. Use a correctly sized table insert to minimize the gap between the spindle and the insert.
6. Sanding creates a lot of dust. Connect this sander to a dust collection system and wear a high-quality
dust mask.

12 | Page Oliver Machinery 6905 Sander
When Sanding:
1. Maintain control of the workpiece:
•Feed the workpiece against the rotation direction of the spindle.
•Hold the workpiece firmly with both hands and apply light pressure against the sanding spindle.
•Use the table to support the workpiece.
2. Keep hands away from the gap between the sanding spindle and the table. Use special jigs to hold
down small workpieces as needed.
WARNING
To avoid kickback and sanding sleeve damages, avoid jamming a sharp corner
against the rotation direction of the sanding spindle. Instead, start from the middle
of the workpiece and work towards the tip of the corner.
OK
WRONG
WARNING
Do not sand edges with curvature
closely matching the sanding
spindle. Failure to comply
increases the risk of losing control
of a workpiece. This can result in
severe injuries and damage to the
workpiece.
After Operation
1. STOP THE MACHINE when the operator leaves the machine for any reason.
2. WAIT until the motor comes to a complete stop.
3. CLEAN UP before departure.

6905 Sander OLIVERMACHINERY.NET 13 |Page
Electricals
WARNING
All electrical work must be done by a qualified electrician and must meet the
electrical code in your area.
Minimum Circuit Size Required for Model 6905 Sander
Stock Number
Voltage
Minimum Circuit Size Required
6905.001
115V
15A
Please ensure the electrical circuit for this machine meets the minimum circuit size requirement. The
minimum circuit size requirement applies to a dedicated circuit that provides power to one 6905 Sander.
If more machines are sharing the same circuit, consult a qualified electrician to ensure the designated
circuit is properly sized for safe operation.
If a circuit is available, but not meeting the minimum circuit size requirement listed above, a new circuit
must be installed for this machine.
Grounding
WARNING Improper grounding can cause electric shock, fire, and equipment damage.
Proper grounding reduces the risk to the operator in the event of electrical malfunction or breakdown.
This machine must be connected to the grounding conductor when available, and all grounding
connections must meet or exceed the electrical code requirements in your area. Furthermore, all grounds
must be verified and must meet or exceed the electrical requirement of the machine. If grounding is not
available, consider the use of a GFCI protection device as an alternative, if this complies with the electric
code in your area.
Indoor Use Only
This machine is designed for indoor use only. Operating this machine outdoor increases its exposure to
moisture, which in turn increases the risk of electric shock.

14 | Page Oliver Machinery 6905 Sander
Electrical Wiring
This machine is pre-wired for 115V, with a cord and a NEMA 5-15 plug. Use of extension cord is not
recommended. If you need to use an extension cord to connect to a power source, select a durable cord
type with a high-temperature rating (90C° or above). Use the minimum amount of extension cord as
needed.
Minimum cord size (AWG) required based on amperage draw and length of the cord:
Amps
Power Cord Length
25 feet
50 feet
75 feet
100 feet
5 to 8
14
14
14
12
8 to 12
14
14
12
10
12 to 15
12
12
10
10
15 to 20
10
10
10
NR
21 to 30
10
NR
NR
NR
*NR: Not Recommended
WARNING
Use properly sized wires that meet or exceed the power requirement of your
machine. Using undersized wires may cause overheating and increase the risk of fire
and machine damage.

6905 Sander OLIVERMACHINERY.NET 15 |Page
Setup
Shop Preparation
Space Requirement
The dimensions of this machine are 14-3/4“(L) x 14-3/4”(W). You will
need additional space for manipulating your workpiece, electrical
connection, and dust collection.
Tool Stand Load Limits
This machine has a shipping weight of 80 lbs., and a net weight of 75
lbs. Ensure the tool stand is built to support the weight of the sander
and other items for the operation.
Tool Stand Height
The height of the tool stand should allow the operator to comfortably
manipulate the workpiece.
Electricals
Make sure a properly sized circuit and electrical outlet are available near the machine. Please refer to
section “Electricals” on page 13 for details regarding electrical requirements.
Lighting
Adequate lighting is needed for operating this machine. Overhead, non-glare lighting should be installed.
Safety Labels
If this machine introduces a new safety hazard to your workplace. Please display proper warning signs in
a highly visible location(s).
Dust Collection
Wood dust created by this sander is a health hazard. High-quality dusk masks should be available for using
the sander.
Connect this machine to a dust collection system. Check air suction strength regularly to ensure wood
dust is effectively removed.
CAUTION
Air resistance and leakage in a dust collection
system impact its effectiveness.
Use
a dust collection system that is rated above
300 CFM at the dust port
. Doing so
improves air quality in the workplace, and
prevents the machine from jamming.

16 | Page Oliver Machinery 6905 Sander
Receiving
Your shipment should come in one box. Upon receiving your shipment, check for any significant damages
before signing the delivery confirmation.
CAUTION
Always wear safety goggles and gloves before removing the straps. Straps may
spring back violently when released and cause injury.
Moving Machine into the Shop
On the day of delivery, please be sure help is available to move the machine to its final location.
WARNING
6905 Sander has a gross weight of 80 lbs. and a net weight of 75 lbs.
Safe moving techniques and proper lifting equipment are required, or serious
personal injury may occur.
WARNING
Your machine may be secured by the straps. Do not lift your shipment by the
strap. They are not designed to hold the total weight of your shipment. They may
snap without warning and cause serious injury and machine damage.
Unboxing
You should find the sander assembly and other parts packed inside the box.
IMPORTANT If items are damaged, please call us immediately at 1-800-559-5065

6905 Sander OLIVERMACHINERY.NET 17 |Page
Inventory
Carefully unwrap the packaging and make sure all components are included in the shipment. Lay out all
items received and inventory them.
Package 1 – Sanding Spindles and Sleeves (2”, 1-1/2” 5/8”, 1/2", 1/4")
Package 2 –Table Inserts
This sander comes with four table inserts. One is already installed on the table.
Package 3 – 4” Duct Adapter, Power Switch Paddle, Childproof Safety Pin
Package 4 –Wrenches
•14/17mm Wrenches (2x)
•10/12mm Wrench (1x)

18 | Page Oliver Machinery 6905 Sander
Cleaning
To prevent rusting during shipment, the unpainted
cast iron tabletop is covered with rust protectant
and plastic film. Remove the plastic film and wipe
off rust protectant with paper towels.
Once all rust protectant is removed, routinely coat
the tabletop with rust preventive such as
Boeshield® T-9 or paste wax. Do not use rust
preventives that contain silicone, which is known to
interfere with certain finishes and glues.
The smaller spindles that come with the sander are
also covered in machine oil. Wipe off the machine
oil before installing the sanding sleeves into the
spindles.
Sanding Sleeves Installation
1. Loosen the sanding sleeve clamp screw.
2. Push the sanding sleeves into the spindle.
New sanding sleeves can be a bit tight.
Lightly tap it into the spindle as needed.
3. Retighten the sanding sleeve clamp screw to
secure the sanding sleeve.
4. Try pulling the sanding sleeve away from the
spindle to make sure it is securely mounted
onto the spindle.

6905 Sander OLIVERMACHINERY.NET 19 |Page
Sanding Spindle Installation / Removal
1. Disconnect sander from the power source!!
2. Gather a pair of 17mm wrenches and
remove the table insert.
3. Thread the spindle counterclockwise into
the quill.
4. With one wrench holding the quill in place,
tighten the spindle with another wrench by
another 1/8 of a turn counterclockwise.
IMPORTANT
The reverse-threaded spindle is self-
tightening. Do not overtighten the
spindle or the spindle can be difficult to
remove later on.
5. Re-install the table insert. Choose an insert
that creates the smallest gap. Make sure the
notch on the outer edge of the insert aligns
with the pin on the table opening.
6. Clear the table before turning on the sander.
To Remove the Spindle
1. Disconnect sander from the power source!!
2. With one wrench holding the quill in place,
rotate the spindle clockwise to loosen it from
the quill.
3. Continue to rotate the spindle clockwise by
hand until the spindle breaks apart from the
quill.
IMPORTANT
Remove the
spindle after each use and keep
the machine in a dry place. The spindle can
bind to the quill if rust forms.

20 | Page Oliver Machinery 6905 Sander
Spindle and Table Insert Storage
Store the spindles and table inserts in the storage areas when they are not in use.
Power Switch Assembly
This sander is equipped with a paddle switch. Install the paddle before turning on the machine.
This switch also comes with a safety pin to prevent the sander from turning on by accident. Insert the pin
through the “ON” button, then secure the pin with the spring located at end of the chain.
Dust Collection
Sanding can generate a lot of dust. Connect this machine to a
dust collection system.
The minimum CFM requirement for this sander is 300 CFM at
the dust port, which means the dust collection system should
have a rating greater than 300 CFM, as air friction and leakage
can reduce the effective CFM at the dust port.
This sander also comes with a 4” adapter which is compatible
with any standard 4” dust collector hose.
IMPORTANT
Running this sander without a dust collection system, or using a dust collection
system with inadequate suction may damage the machine and cause other
hazardous situations. Check your dust collection system regularly to make sure it
is not jammed or filled up.