Hitech All-U-Need GLASS/CRYSTAL User manual

INSTRUCTION MANUAL
All-U-Need
GLASS/CRYSTAL MODEL
EST. 1984
HI TECH
EST. 1984
HI TECH

2
SAFETY INSTRUCTIONS
WARNING: This machine includes products that can expose you to chemicals
including nickel, which is known to the State of California to cause cancer.
For more information, go to www.P65Warnings.ca.gov.
This warning applies to the 360#, 600#, 1200# and 3000# diamond discs.
IMPORTANT! READ FIRST
For your own safety be sure to read, understand and follow all warnings, safety rules and
instructions in this instruction manual before using this machine. Failure to do so can
result in serious personal injury. This instruction manual is intended for the following
machine models: 20-027, 21-017, 20-026 and 21-007.
SAVE THESE INSTRUCTIONS
SETUP
• Intended for indoor use only.
• Avoid dangerous environments. Do not use
this machine near gasoline or other flammable
liquids.
• Make sure machine is securely placed on a
sturdy, level surface with ample working area
and away from open electrical outlets.
• Check for damaged parts. Before use of this
machine, always check for any damaged parts
to determine that it will operate properly and
perform its intended function. Check for proper
alignment of moving parts, binding of moving
parts, breakage of parts, mounting, and any
other conditions that may aect its operation. A
part that is damaged must be properly replaced
through the manufacturer of this machine to
avoid risk of injury.
• Use only identical All-U-Need parts for
replacement parts. Use of any other parts not
originally intended for the All-U-Need may create
a hazard or cause product damage.
• Use only recommended accessories. The use
of improper accessories on this machine may
cause risk of injury.
• Know your power tool. Read this instruction
manual carefully. Learn the correct applications
and limitations as well as specific warnings and
hazards related to this machine.
USAGE
• Always wear proper apparel. Do not wear any
loose clothing, gloves, neckties or jewelry that
can get caught in the machine’s moving parts.
Long hair must be secured with a rubber band or
hair tie.

3
SAFETY INSTRUCTIONS
• Always wear proper eye protection to protect
you from any debris that may fly out while
grinding. We recommend wearing safety goggles
or safety glasses with side shields. Everyday
glasses are not safety glasses. If anyone is around
the machine while it is in use, they must wear
safety glasses.
• Keep work area well lit and clean. Make sure
your work area is not cluttered.
• Do not operate unattended. Adult supervision
is required at all times. Never leave the machine
running unattended.
• Do not operate this machine while under the
influence of drugs, alcohol or any medication.
• Never run discs dry. Make sure there is
adequate water used while grinding so that
rock dust is not formed. This dust contains
chemicals that can be hazardous to your lungs
if inhaled and is known to cause cancer, birth
defects or other reproductive harm. To reduce
your exposure to these chemicals, work in a well
ventilated area and wear a face or dust mask if
the grinding operation is dusty.
• Use only water as a coolant.
• Never grind more than one workpiece at a
time.
• Some rocks contain poisonous elements.
Avoid grinding rocks that contain uranium,
mercury, lead, arsenic, etc. Make sure you know
the material you are grinding.
• Do not allow water to run down the sha
and into the motor. This will cause the motor to
instantly burn out. This machine is designed in such
a way that this does not occur with normal use.
• Do not allow the water level to build up in the
catch tray. Make sure the drainage hole is open
so water does not back-up in the catch tray and
possibly leak down the motor sha.
• Do not force the tool or attachment to do a job
it is not designed to do.
• Discs continue to spin aer turn o,
eventually slowing to a stop.
• Avoid awkward operations and hand
positions. Make sure you have good balance
while working on this machine. A sudden slip
could cause your hand to move into the disc.
MAINTENANCE
• Always disconnect from power before
servicing. Disconnect machine from power
source before making any adjustments and when
not in use.
• Do not abuse the power cord. Never carry
the machine by the cord or yank it to disconnect
from receptacle. Keep cord away from heat, oil
and sharp edges.
• Do not open the black cone body. There are no
user serviceable parts inside.
• Clean and dry machine aer use.

4
TABLE OF CONTENTS
SAFETY INSTRUCTIONS 2
WARRANTY INFORMATION 5
MACHINE DETAILS 6
OPERATING INSTRUCTIONS 7
GRINDING AND POLISHING 8
MAINTENANCE 10
COOLING SYSTEM 11
ACCESSORIES 12
FAQS 14
TROUBLESHOOTING 15
REGISTER YOUR PRODUCT
Scan the QR code below to register your product.
Registering your Hi-Tech Diamond All-U-Need
is essential to facilitate any warranty related
requests. You can also register your machine
at hitechdiamond.com/register or over the
phone with us at [phone].

5
ONE-YEAR LIMITED WARRANTY
What does this warranty cover?
This warranty covers all structural and electrical
parts of the Hi-Tech Diamond All-U-Need such as
the motor, rectifier, speed controller, etc.
What does this warranty not cover?
This warranty does not cover any consumable
goods such as saw blades, diamond abrasives
and/or polishing products. This warranty also
does not cover any abuse, misuse, intentional
damage, incorrect usage, failure to adequately
take care of the machine, improperly following
the instructions, servicing by someone other than
Hi-Tech Diamond personnel, the or loss and/or
any act of nature.
Who is covered under this warranty?
This warranty only covers the original purchaser
of the equipment. It is non-transferable.
What is the warranty period?
This warranty service is in force for one full year
from the date of your purchase. Please retain
the original invoice of your machine for proof
of warranty or register your All-U-Need.
Need our warranty service?
Contact us directly by phone at [phone]
or by email at [email protected]om and
we will assist you. You must prove that you
are under warranty by providing us with
the original invoice of your machine or by
registering your All-U-Need to receive our
warranty service.
This All-U-Need is warranted by the manufacturer to be free from
defect for the period of one full year from the date of purchase.
Extended warranty program
You’ve made a smart investment by purchasing
this Hi-Tech Diamond All-U-Need so protect it by
extending this manufacturer’s warranty another
1-2 years! For purchase, visit hitechdiamond.com
or call [phone]. Important note: You have
up to 45 days from the purchase date of this Hi-Tech
Diamond machine to add this extended warranty.

6
MACHINE DETAILS
The image below shows parts and accessories included with your All-U-Need machine:
SPEED CHART
The motor installed in the All-U-Need
is variable speed, delivering speeds of
800 rpm - 3,400 rpm. Use this speed
chart as a guide so you can work at
the speed you desire. These values
are approximate. Actual speeds may
vary.
3,400 rpm 800 rpm
1,800 rpm
2,300 rpm
1,200 rpm2,900 rpm
1
2
3
4
6
5
7
8
910 11
1. Water cup with black
water tube and valve
2. Silver arbor with black
knob and washer
3. Black spray shield
4. All-U-Need base unit (1/4
hp variable speed motor)
5. Clear drain tube
6. Water cup with cup holder
7. 3/32" Allen wrench
(included with instruction
manual)
8. 360# diamond disc with
acrylic backing plate
9. 600# diamond disc
10. 1,200# diamond disc
11. 3,000# diamond disc
12. Tech-11 polishing pad
with 14,000# diamond paste
syringe
13. Acrylic backing plate - to
be used with Tech-11 pad
14. Disc bushing - inserts
into backing plate arbor hole
12
14
13

7
OPERATING INSTRUCTIONS
1Carefully unpack the All-U-Need from the box and remove all loose foam and accessories.
Set the packaging aside should you need it in the
future. Check to make sure all parts are present
on both the machine and in the accessory kit. If
you find any missing or damaged parts, call us
immediately at 1 [phone] or email us at
[email protected]om.
2
Place the All-U-Need on a table or surface
that is flat in a well lit location. Make sure
the machine sits level and the white catch tray
is securely mounted on a horizontal plane on
the motor housing. If the tray is raised or tilted,
it will hit the motor sha or silver arbor and rub,
causing a squeaking sound on the arbor.
3
Install the water system by inserting the black
tube with valve into the white cup with the
hole. Position this cup on top of the spray shield.
Insert the clear drain tube into the drain hole
on the bottom right side of the white catch tray.
Position the other white cup under the drain tube.
See cover image for correct set-up. Fill the top
cup with clean water. Never re-use water. Note: To
install the optional cup holder or Pro-Flow water
cooling system, see page 11.
4
Install your discs by inserting the disc bushing
into the backing plate, then place the backing
plate onto the arbor. The disc bushing can be
inserted either way but is smaller on one side to
accommodate variations in the disc hole. If you
have diiculty centering the disc, try using the
other side of the disc bushing. The disc bushing
will slightly extend out of the backing plate. Next,
place the diamond disc on top of the backing
plate, using the disc bushing to center the
diamond disc. Make sure the disc is centered and
Fig. A
has even contact with the backing plate surface.
Secure the disc and backing plate with the ¼"-20
thread knurled black knob and washers (Fig. A).
Always use a backing plate for diamond discs or
polishing pads. To determine what disc you need
to start with, see page 8.
5
Put on safety goggles (not included) and
turn the power switch on. Adjust the water
drip tube so the water is aimed at the center of
the disc. You only need a few drops of water to
adequately lubricate the discs. Never use discs
dry and use only clean water as a lubricant. Do
not use wipers or sponges, as they may become
contaminated with larger diamond particles.
You can control the water splash by raising
or lowering the black spray shield. (Fig. B).
Important note: When run at low speeds, vibration
is normal and to be expected.
Screws (4)
located on
the black
spray shield
are adjust-
able to raise
and lower the
spray shield
to control the
water splash
Fig. B
Catch tray
Arbor
Knob and
washers

8
GRINDING AND POLISHING
STEP 1: ROUGHING
The 360# diamond disc is the coarsest disc that
comes with this All-U-Need. If you have less than
a millimeter to remove, we suggest skipping this
step and begin at step 2. The 360# disc is required
if you need to remove a large amount of material
from your work piece, or to remove glass le from
the punty. Install the 360# disc according to the
instructions on page 7. Remove material until you
obtain the general shape, size or depth of your
finished piece.
STEP 2: SHAPING
The 600# diamond disc will either create your
first intial shape, or if you started at step 1,
remove the deeper scratches le by the 360# disc
and attain the final shape. Install the 600# disc
according to the instructions on page 7. Remove
material until you have a look simliar to a surface
having been roughly sandblasted.
STEP 3: SMOOTHING
The 1,200# diamond disc will remove scratches
le behind from step 2. Install the 1,200# disc
according to the instructions on page 7. Proceed
to grind until you have a finely frosted surface.
A properly shaped surface is perfectly smooth
and satiny in appearance. Rinsed and dried, you
should not see any scales (aka dimples, facets,
flats, etc,) or scratches. Hold it up to a bright light
and look for deep lines. Scales are most easily
observed by watching the piece dry. Because
the “scales” will have deeper puddles of water,
they will evaporate more slowly. Wet your piece
and watch for this phenomenon. If you see any
scratches or scales, you may not have smoothed
long enough. If aer additional smoothing you
still see scratches or scales, they are too deep to
360# diamond disc
600# diamond disc
1,200# diamond disc

9
GRINDING AND POLISHING
remove. You must return to step 1 (360# disc) and
start this process over. If aer this step, your piece
has a finely frosted finish, then you are ready to
move onto step 4.
STEP 4: PRE-POLISHING
The 3,000# diamond disc removes the satin-like
finish from the previous step. Install the 3,000#
disc according to the instructions on page 7. Your
goal aer this step is a very smooth, hazy surface.
There should be no visible scratches or scales at
this point. If you can still see scratches, you need
to go back to step 1. This disc preps your piece for
the final polish.
STEP 5: POLISHING
The Tech-11 polishing pad is used to put the final
polish on your material. You will need to charge
the Tech-11 polishing pad with the 14,000#
diamond paste before use. To do this, take the
diamond paste syringe, remove the cap and
squeeze the syringe plunger in a series of small
dots onto the surface of the Tech-11 pad (Fig.
C). Use your fingers to rub these small dots into
the pad. Once charged, you will only need to
apply additional diamond paste to the pad when
you notice that the pad is no longer polishing.
Using the Tech-11 polishing pad with water is
not required because the diamond compound
mixture contains its own carriers. However, if you
are working with brittle, heat sensitive material,
such as opal, be careful not to let your work
piece overheat. To avoid overheating, use a very
small amount of clean water to keep your work
piece cool or simply lower the RPM to reduce
heat buildup. Note: Use only one type of polishing
compound per Tech-11 polishing pad. Do not mix.
3,000# diamond disc
Fig. C
Tech-11 polishing pad with
14,000# diamond paste syringe

10
MAINTENANCE
OILING
The only part you need to oil on the All-U-Need
machine is the inside of the 2" silver arbor. This is
required because the motor sha and arbor are
made of dierent materials. Over time, they can
seize together, making it impossible to remove
the arbor. Every two months or so, remove the
arbor by inserting the included Allen wrench into
the set screw, turning counter-clockwise. Turn the
arbor upside down. Apply a few drops of motor
oil, way oil, lithium or water pump grease into
the area where the arbor fits onto the sha. Make
sure there is no excess oil so that oil doesn’t drip
down the motor sha and get into the motor.
This will cause an instant motor burn-out. When
putting the arbor back onto the sha, make sure
the screw is positioned against the flat side of the
motor sha. If the screw is positioned against the
rounded side of the sha, it will make a squeak-
ing noise and create friction, causing the motor
sha to get hot. Once the arbor is positioned
properly, check the set screw for tightness on the
arbor using the Allen wrench. Do not over tighten
the set screw, as you will need to remove it regu-
larly to clean the tray. The arbor may be adjusted
up and down if necessary to keep the spinning
disc below the black spray shield.
CLEANING
The All-U-Need is designed to be easily disas-
sembled for cleaning. Aer each use, rinse the
black splash guard and flush out the white catch
tray with clean water so the rock sediment can
get washed down the drain tube. Any used water
must not be disposed down a sink, as it can
harden like cement, closing o the drain. Allow
the machine to dry completely then store it in a
safe place, away from children.
Note: When you are finished using the diamond
discs, rinse and spin completely dry. Store them in
a clean, dry plastic bag until next use. Maximum
weight of any discs/laps should not exceed 1.5lbs
on your All-U-Need machine.
FUSE DETAILS
The fuse is installed in the back of the All-U-Need
machine. It is a 250V, 3AMP slo-blo cartridge fuse.
If you need a replacement, this fuse can be found
at your local hardware store. See below for how
to change the fuse.
Set
screw
Push in with a flat head screwdriver, then turn to the le
(counter-clockwise)
Arbor

11
COOLING SYSTEM
INSTALLING THE CUP HOLDER
1
The black cup holder is found in your water kit
bag, take it out.
2
Using a screwdriver, unscrew the screw that
is located in the front right corner in the All-U-
Need base.
3
Center the hole in the black cup holder with
the hole in the base and screw the black cup
holder into the All-U-Need base.
Note: Do not over-tighten the screw or the screw
may strip the hole. If this happens, the screw will
not be able to tighten. Only tighten the screw so
there is a snug fit.
INSTALLING THE PRO-FLOW
ATTACHMENT
This feature is not available on all models.
1Attach your Pro-Flow water cooling system to any side of the All-U-Need white catch
tray. Tighten the thumbscrews to fasten.
2
Connect the Pro-Flow clear tubing to the
water pump or pressure tank. Connect the
⅝" diameter clear tubing to the drain spout
of the catch tray and place the other end in
a bucket (not included) to collect the runo
water.
3
Adjust your desired water flow using the
control valve.

12
ACCESSORIES
Backing plates
Our 6" and 8" acrylic backing plates provide a
flat surface to back diamond discs and polishing
pads. They are 3/8" thick and have 1/2" arbor
holes.
Tech-11 polishing pads
Our 6" and 8" Tech-11 polishing pads are made
with a thick felt and serve as a general polishing
pad to polish stone and glass. Use with cerium
oxide, tin oxide or diamond compound.
Final polish pads
Our 6" and 8" final polishing pads are specially
designed to put a mirror polish on stone and
glass. They are pre-charged with cerium oxide so
you don’t need to mess with slurry or diamond
paste .
Glass grinding bits
Our glass grinding bits are used for shaping edges
and creating grooves in stained glass for wire
wrapping. Bits with 3/8" arbor holes conveniently
fit onto the motor sha of the All-U-Need,
transforming this flat lap into a power-horse glass
grinder. Select from the following grits: 60#, 80#,
100#, 220#, 360# and 600#.
For more Hi-Tech Diamond products and accessories, visit hitechdiamond.com.

13
Electroplated diamond discs
Our 6" and 8" diamond discs are used for precise
rough and fine grinding on glass and stone.
They are nickel electroplated, using top grade
diamond powder. Discs are 1mm thick top
plates. Select from the following grits: 60#, 80#,
100#, 180#, 260#, 360#, 600#, 1,200# and 3,000#.
Glass/crystal disc kit
Our glass/crystal disc kit is the same accessory
kit included with this All-U-Need. It’s great for
replacing all of your discs at once. Kits include
the following: 360# disc, 600# disc, 1,200# disc,
3,000# disc, Tech-11 polishing pad, 14,000#
diamond paste and two backing plates.
ACCESSORIES
For more Hi-Tech Diamond products and accessories, visit hitechdiamond.com.
Electroplated diamond laps
Our 6" and 8" diamond laps use high quality
diamond discs for precise rough and fine
grinding. This disc is then professionally bound to
an acrylic backing plate, making it ready to use.
Select from the following grits: 60#, 80#, 100#,
180#, 260#, 360#, 600#, 1,200# and 3,000#.
Diamond smoothing discs
Our 6" and 8" diamond smoothing discs are used
for smoothing, refining and polishing gemstones,
glass, synthetic material and metal. Discs are
available in the following grits: 220#, 325#, 600#,
1,200# and 3,000#.

14
FAQS
What lubricants should I use with the
All-U-Need?
We recommend using only clean water with
the All-U-Need. If desired, you may add a water
soluble coolant to the water.
Can I reuse water for diamond
grinding?
You can, but we don’t recommend this. When you
reuse water, you risk getting contamination on
your diamond discs which increases the chances
of unwanted scratches on your work pieces. For
best results, use clean water every time you use
the All-U-Need.
How do I clean the white catch tray?
To prevent the drain tube from clogging, flush
the white catch tray aer every use on the All-
U-Need by taking a small bucket of clean water
and pouring the water into the catch tray so the
leover rock sediment gets flushed down the
drain tube. Once you see all of the sediment
gone and the white catch tray is clean, your
All-U-Need will be ready for the next use. If you
need to remove the white catch tray for further
cleaning, do so by removing the arbor with the
Allen wrench that is included with the All-U-Need
instruction manual.
Do you sell electrical spare parts for
my All-U-Need? Whom do I contact if
I need a repair or replacement for my
All-U-Need?
Due to the technical nature of our machines,
we do not oer electrical spare parts for you to
install yourself such as motors, speed controllers,
rectifiers, etc. Instead, we oer a repair
service that is done in-house by our qualified
technicians. For more information about our
repair service, visit hitechdiamond.com/repairs.

15
TROUBLESHOOTING
My machine is vibrating...
The motor that is installed in the All-U-Need
is variable speed, meaning you can adjust the
speed in-between the range of 800 rpm - 3,400
rpm. When the All-U-Need is run at slower
speeds, vibration is normal and to be expected.
We recommend running the All-U-Need at higher
speeds to prevent this vibration. If you are still
experiencing a vibration aer running the All-U-
Need at high rpms, check to see if your discs are
properly centered. If the diamond discs are not
accurately centered with the 1/2" arbor hole in
the backing plate, this will cause a vibration.
My motor is beginning to rust, why is
this?
The only possible way the motor can rust is
if there is water getting into the motor. Water
should never get into the motor with the correct
water set up so if you are seeing rust, make sure
your water set up doesn’t allow water to drip into
the motor.
What should I do if the drain tube
keeps clogging with sediment?
If the drain tube keeps clogging with leover rock
sediment, simply flush out the sediment with lots
of clean water until the sediment gets flushed
down the drain tube. If a large piece of sediment
is clogged and stuck in the drain tube, use an air
spray gun to blow it out.
My All-U-Need is making a loud,
squeaking noise. Why is this?
If your All-U-Need is making a loud, squeaking
noise, it can be one of the following scenarios:
1) The inside of the silver arbor hasn’t been oiled
in a while. Make sure you are oiling the inside of
the arbor according to the oiling instructions on
page 10.
2) The white catch tray is raised or tilted, thus
hitting the motor sha or arbor and causing
them to rub against each other. Make sure your
All-U-Need sits on a flat, level surface.
3) The arbor isn’t properly tightened onto the
motor sha. Make sure the arbor is secured using
the included Allen wrench.
I can’t remove the arbor from the
motor shaft.
If you can’t remove the arbor from the motor
sha using the Allen wrench, it is most likely
because the arbor and motor sha seized
together. This is a result from not oiling the inside
of the arbor according to the oiling instructions
on page 10. If it impossible to remove, please
contact Hi-Tech Diamond at 1 [phone] and
one of our specialized technicians will help you
over the phone for correct removal.

Rev 05/18/23
EST. 1984
HI TECH
EST. 1984
HI TECH
MANUFACTURED BY
Reentel International Inc.
44 Plaza Drive
Westmont, IL 60559 - USA
PHONE
1 [phone]
EMAIL
[email protected]om
WEBSITE
hitechdiamond.com
FACEBOOK
facebook.com/hitechdiamond
YOUTUBE
youtube.com/hitechdiamond
INSTAGRAM
instagram.com/hitechdiamond