Transcript No finish is better than the underlying surface

Best way
to avoid
sanding:
• Sharp tools
• Good tool
technique
Sandpaper
is a cutting
tool
Not a
shaping
tool –
Don’t
oversand
Sanding is
meant to
get rid of
tool marks
Try to sand ridges
Not tear out
Do Not
Use Cheap
Sandpaper
- mixed grit 80 in 240
(CAMI,FEPA, JIS, Micron)
- Friability (fresh edges)
- Velcro bad
- Won’t stick to pad
- Separates from grit backing
Use the largest
sanding pad
that is practical
• Faster
• Removes ripples
Clean bowl
between grits
High Speed
Sanding
Advantages
1.Cuts sanding time dramaticallyf
2. Does NOT obliterate detail
(perfectly centered)
3. No starved horse
4. Smoother finish (feels like next
grit up)
Concerns
Heat, cracking of wood
- Pressure
- Speed
Ease up on the pressure
(Grand Canyons)
Speeds
Lathe: 500-1200 rpm
Power Sander: 6000 rpm
Speed or resistance allows
grit to fracture – not heat
Alox is friable
Speed also helps cool wood and
disk (if pressure is kept down)
Grinder
Walter (Metabo) variable speed
(expensive)
Makita Bosch variable speed
(less expensive)
Regular 10,000 – 13,000 grinder
with router rheostat
Really cheap with rheostat made
from dimmer switch
Adapting the
Grinder
Adaptor
Sandmate
(www.sandmate.com)
$3
• 5/8"-11 Female to 5/16"-18 Male
Rethread 5/16” to ¼”-20
• Fits both Roloc or Power Lock
Walter
$30
Air Tool Services,
Burlington ON
905 639-5821
$30
Make your own
Sanding Pad
3” diameter
• Roloc from auto body shops
Roloc No. 051144-05540
• Power Lock from Craft Supplies
$12.50
• Note: they are NOT interchangeable
$16
Sanding Discs
• 3M Roloc Discs
auto body shop suppliers
• Power Lock
Craft Supplies USA
80 cents
80 cents
(both are aluminum oxide resin bonded)
Discs also available in
Zirconia and Ceramic
• Sandmate Ceramic 80, 120
$1.12
Can also use
Velcro Systems
• Tim Skilton and other pads fit converted
grinder
• Sandmate makes a ¾ inch thick foam pad
that fits right on the grinder – no
conversion
Bonded pad
$20
• Use ceramic, Astra Dot or Ekamant
sandpapers
Norton A975
“Dry Ice” (ceramic)
54 cents
The Sanding Glove
3M 900DZ
ceramic – psa
62 cents
The Sanding Glove
Craft Supplies USA
Ekamant Red
Lionel Bedard
Astra Dot
Roll 6” x 39”
WoodChuckers Supply
800 551-0192
35 cents