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Page 7

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SKU 67632 

        

Make sure that the Stops (6) are lightly 

5. 

touching each Barrel Lid (9).  This will 

prevent the Barrel Lids from rubbing 

against the housing and will reduce 

friction.
To open either Rubber Barrel, remove 

6. 

the Barrels from the unit and then 

remove  the Knurled Nuts (7) and the 

Washers (8).  Next, remove the Barrel 

Lids (9).

note: 

7. 

 It is imperative to load the 

Tumbler with the proper amount of 

materials, or the process will not be 

successful, and the motor could be 

damaged.  Underloaded barrels will not 

lift rocks up the inner side walls allowing 

the cascading effect. Also, the abrasive 

material in an underloaded Tumbler 

will tend to form a slurry and will not be 

effective.  An overloaded Tumbler will not 

allow the rocks to cascade.  Lastly, too 

much water will cause the abrasives to 

float and not do their job.  

“Charging” a barrel means loading it.  

8. 

Charge your barrels from 1/2 to 3/4 full.  

More pointed or abrasive rocks or stones 

will require closer to 3/4 full, leaving 

a 1/2 full barrel when it comes time to 

polish.

note:

9. 

  During tumbling, the stones will 

be somewhat reduced in size. 
Choose stones that are similar in nature.  

10. 

They should have a mix of sizes ranging 

from small (3/16” to 3/8”) to large (3/4” 

to 1”).  25% of the stones should be in 

the smaller range.  Split the remaining 

volume between medium sized (3/8” to 

5/8”) and large sized (5/8” to 1”) stones. 
For best results use a four step polish 

11. 

process.  First, use a silicon carbide 

grain, 60-90 grit size.  Second, use a fine 

silicon carbide grain, 220 grit or a little 

finer. Next, use a 600 grit silicon carbide 

grain or a pre-polish.  Lastly, use a polish 

of Tin Oxide, Cerium Oxide, or Titanium 

Dioxide.  When tumbling hard materials, 

it might be necessary to repeat the 

steps. 

 

Amounts of abrasive  

(per tumbler barrel): 

        Coarse Grind: 4 Tbsp. 

        Medium: 4 Tbsp

        Pre-polish: 6 Tbsp. 

        Polish: 6 Tbsp.  

        Burnish (soap): 1 Tbsp. 

        Plastic Pellets (such as SKU 97818)
12.  Add enough water to reach the bottom of 

the top layer of rocks.

13.  Seal the Rubber Barrels and replace 

the Barrel Lids, Knurled Nuts and the 

Washers.  

14.  Set the Rubber Barrels on the rollers and 

turn on the Power Switch (27).  Make 

sure to check the Lid seal during the first 

ten minutes to make sure the tumbler 

isn’t leaking.

note:

  You can use this Tumbler to work with 

metal and metal jewelry (without gemstones). 

This Tumbler may be used to take the jagged, 

sharp edges off of small metal parts.  To polish 

brass, gold, silver, or copper, use polishing me-

dia designed for that specific purpose.

note: 

 For more in-depth information on pol-

ishing jewelry, we recommend you purchase a 

jewelry polishing handbook. 

Summary of Contents for 67632

Page 1: ...s All rights reserved No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools Diagrams within this manual may not be drawn proportionally Due to continuing improvements actual product may differ slightly from the product described herein Tools required for assembly and service may not be included F...

Page 2: ...erious injury CAUTION used with the safety alert symbol indicates a hazardous situation which if not avoided could result in minor or moderate injury NOTICE is used to address practices not related to personal injury CAUTION without the safety alert symbol is used to address practices not related to personal injury General Tool Safety Warnings WARNING Read all safety warnings and instructions Fail...

Page 3: ...Follow instructions for lubricating and changing accessories DISCONNECT TOOLS before servicing 11 when changing accessories such as blades bits cutters and the like REDUCE THE RISK OF 12 UNINTENTIONAL STARTING Make sure switch is in off position before plugging in USE RECOMMENDED ACCESSORIES 13 Consult the owner s manual for recommended accessories The use of improper accessories may cause risk of...

Page 4: ...rong Plug and Outlet The tool has a grounding plug that looks like the plug illustrated above in 125 V 3 Prong Plug and Outlet The outlet must be properly installed and 8 grounded in accordance with all codes and ordinances Do not use an adapter to connect this 9 tool to a different outlet Tumbler Safety Warnings Do not USE OUTDOORS 1 DO NOT USE WITH SAND 2 Do not overload Tumbler 3 Do not place T...

Page 5: ...ruction manual cannot cover all possible conditions and situations that may occur It must be understood by the operator that common sense and caution are factors which cannot be built into this product but must be supplied by the operator Save these instructions Specifications Motor 120 V 60 Hz Capacity 3 lb per drum Barrel Type Rubber allows for quieter operation Unpacking When unpacking make sur...

Page 6: ...fore performing any inspection maintenance or cleaning procedures TO PREVENT SERIOUS INJURY Do not operate with ANY guard disabled damaged or removed Moving guards must move freely and close instantly Work Piece and Work Area Set Up Designate a work area that is applicable 1 for prolonged Tumbler use The work area must not allow access by children or pets to prevent distraction and injury Route th...

Page 7: ...es ranging from small 3 16 to 3 8 to large 3 4 to 1 25 of the stones should be in the smaller range Split the remaining volume between medium sized 3 8 to 5 8 and large sized 5 8 to 1 stones For best results use a four step polish 11 process First use a silicon carbide grain 60 90 grit size Second use a fine silicon carbide grain 220 grit or a little finer Next use a 600 grit silicon carbide grain...

Page 8: ...or grit remaining on the stones Second Grind Carefully replace stones into Rubber Barrels If Rubber Barrels are less than 1 2 full add plastic pellets not included to make up the difference Add medium grit see page 5 and water up to the bottom of the top layer of rocks Reseal and tumble Run it for 2 3 days before checking They will begin to smooth After seven days they should have a smooth finish ...

Page 9: ...ication BEFORE FIRST USE and once a 1 month following put a few drops of oil on the Driving Shaft Bearings 42 BEFORE EACH USE 2 inspect general condition of tool Check for loose hardware misalignment or binding of moving parts cracked or broken parts damaged electrical wiring and any condition that may affect safe operation After Use 3 wipe external surfaces of the tool with clean cloth 4 WARNING ...

Page 10: ...37 O Ring Ø8 6 38 Washer Ø8 1 39 Foot B 2 40 V Belt 1 41 Base 1 42 Driving Shaft Bearing 1 PLEASE READ THE FOLLOWING CAREFULLY The manufacturer and or distributor has provided the parts list and assembly diagram in this manual as a reference tool only Neither the manufacturer or distributor makes any representation or warranty of any kind to the buyer that he or she is qualified to make any repair...

Page 11: ...GRAM Record Product s Serial Number Here Note If product has no serial number record month and year of purchase instead Note Some parts are listed and shown for illustration purposes only and are not available individually as replacement parts Please note Not all parts are washable ...

Page 12: ...ncidental or consequential damages so the above limitation of exclusion may not apply to you This warranty is expressly in lieu of all other warranties express or implied including the warranties of merchantability and fitness To take advantage of this warranty the product or part must be returned to us with transportation charges prepaid Proof of purchase date and an explanation of the complaint ...

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