Coffey Machinery prefers to take a consultative approach to selling.
We have posted some helpful videos, calculators, and technical tips under this section of our website.
Each question can be clicked on to expand the library.
Please let us know if you have any questions.
CLICK HERE to contact Coffey Machinery with questions or comments.
Many of our vendors are producing video content at no charge to you. We will post the links here, Click on VIDEO to take your directly there;
VIDEO Facebook Live Weinig Moulder Tips
VIDEO Holz-Her Facebook Live Edge Banding with PUR
VIDEO Weinig USA Facebook Live # 3 ServoLock Spindle Tool
VIDEO Weinig Facebook LIVE Event 4 PowerMat 1500 Quick Tool Change
VIDEO Holz-Her Facebook LIVE topic NIR Zero Glue Line edge bander technology
VIDEO LINK Weinig Facebook Live # 6 Tool Steel and profile grinding information
VIDEO Holz-Her Facebook Live #7 Vertical Panel Saw in auto mode
VIDEO Weinig Holz-Her Facebook Live #8 EnVision Parametric passage door
VIDEO Weinig Facebook Live # 9 HydroMat 3000 12 inch 300fpm moulder review
VIDEO Weinig Facebook Live # 10 RondaMat 960 profile grinder tips and tricks
VIDEO HolzHer Facebook Live Small Edge Banders
VIDEO HolzHer Facebook Live Evolution Vertical CNC milling knock down connector parts
VIDEO Weinig Facebook Live Dimter optimizing cross cut saw
VIDEO Facebook Live Holz-Her Entry Level Edge Bander
VIDEO Facebook Live Weinig Material Handling Division Rip Saw Feeder 35 boards per minute
VIDEO Weinig Moulder Master and R1000 CNC tool grinder Facebook Live Event
VIDEO HolzHer GluJet edge bander system on Facebook Live
VIDEO Holz-Her Zentrex Panel Saw Feature Laser Part Verification
VIDEO HOLZHER ZENTREX CNC BEAM SAW BI-DIRECTIONAL GROOVING PART 2
VIDEO Weinig HolzHer review of training and service available
VIDEO Holz_her Multi-Tool Technology for fast radius changeovers on your bander
VIDEO Timesaver Abrasive Belt Change
VIDEO Timesaver Widebelt Sander Tracking Issues and Settings
APPROXIMATE STOCK REMOVAL AND DEPTH OF SCRATCH FOR ABRASIVE SANDING
Grit Stock Removal: Inches Stock Removal: MM
24 .125 - .150 3.18 - 3.81
36 .095 - .110 2.47 - 2.86
60 .035 - .045 .91 - 1.17
80 .020 - .030 .52 - .78
100 .015 - .020 .39 - .52
120 .010 - .015 .26 - .31
150 .006 - .009 .13 - .21
180 .003 - .005 .10 - .13
220 .002 - .003 .08 - .10
Depth of scratch created by abrasive belt:
Grit Depth of Scratch “ Depth of scratch mm
24 .040 - .050 1 - 1.27
36 .028 - .030 .73 - .78
60 .025 - .022 .57 - .65
80 .015 - .018 .39 - .47
100 .010 - .012 .26 - .31
120 .008 - .010 .21 - .26
150 .005 - .006 .13 - .15
180 .004 - .005 .10 - .13
220 .003 - .004 .08 - .10
The above chart is only a reference guide since several other factors, such as belt wear, wood species, part width, etc, will affect these figures.
Solid Surface values vary widely depending on chemical content.
Example
Stock Removal: 1/32” or .031” @20 FPM in Oak
60 / 30 / 10 Rule of thumb:
GRIT CAPABILITY REQUIREMENT
100X stock removal = .025” .019”
150x stock removal = .011” .009”
180x stock removal = .006” (.0036” pad) .003”
Total stock removal: .042” or .0396” .031”
*aggressive – lineal sanding statistic – cross grain will be visible on door
Example 2
Stock Removal: 1/64” or .015” @ 20 FPM in OAK
GRIT CAPABILITY REQUIREMENT
2 Heads:
120x stock removal = .018” .011”
180x stock removal = .006” (.0036” pad) .004”
TOTAL Stock Removal .015”
100x stock removal = .025” .011”
150 x stock removal =.011” (.006” pad) .004”
TOTAL Stock Removal .015”
3 Heads:
120x stock removal = .018” .009”
180x stock removal = .006” .0045”
220x stock removal = .003” .0015”
TOTAL Stock Removal .015”
It is always better to sand less aggressively when sanding across the grain.
Chip Load = Feed Rate (inches per minute) / (RPM x number of flutes)
Example: Chip Load = 500 inches per minutes / (15,000 RPM x 2 flutes)
Chip Load = . 017".
1. Chip loads are based on material thickness of average size for cutting edge length of tool.
2. Generally speaking most tooling companies suggest no more than 3x's the diameter of tool for depth of cut. Material specific, please consult tooling manufacturer for exact specs.
3. Careful consideration must be paid to material holding method (pods, jib, vacuum, mechanical), capability of machine (spindle HP, maximum movement speeds, rigidity of machine), and programming methods (through cutting, tabbing, onion skinning, lead in/out's, etc.). Be safe and ask for help.
4. It is worth noting that the most common mistake we see in tool selection is buying a tool with more flutes than is needed and not being able to run the tool fast enough to allow it to perform. This burns up tools (likely more expensive) and is the equivalent to pressing the brake and gas pedals at the same time in your car.
Please contact Coffey Machinery if you have additional questions.