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startrite_bandsaw [2019-05-10 16:42]
alfie [Maintainers]
startrite_bandsaw [2019-06-19 19:39] (current)
alfie
Line 23: Line 23:
  
 ^ Material ^ Speed (feet/min) (thickness < 0.5") ^ Speed (feet/min) (thickness > 0.5") ^ ^ Material ^ Speed (feet/min) (thickness < 0.5") ^ Speed (feet/min) (thickness > 0.5") ^
-| Aluminium | 1000 | 700 |  +| Aluminium ​| 1000 | 700 |  
-| Brass - Cast | 320 | 180 |+| Brass  - Cast | 320 | 180 |
 | Brass - Soft | 1800 | 1000 | | Brass - Soft | 1800 | 1000 |
 | Cardboard | 3200 | 3200 | | Cardboard | 3200 | 3200 |
-| Copper | 1800 | 1000 |+| Copper ​| 1800 | 1000 |
 | Iron - Cast | 180 | 100 | | Iron - Cast | 180 | 100 |
 | Leather | 3200 | 3200 | | Leather | 3200 | 3200 |
-| Plastics | 3200 | 3200 | +| Plastics ​* *| 3200 | 3200 | 
 | Rubber | 3200 | 3200 | | Rubber | 3200 | 3200 |
 | Silver | 1800 | 1800 | | Silver | 1800 | 1800 |
-| Steel | 180 | 180 |+| Steel *| 180 | 180 |
 | Wood | 3200 | 3200 | | Wood | 3200 | 3200 |
 +* - cooling recommended in the manual.
  
 +* * - cooling recommended for perspex in the manual.
 +===== Saw blade width and minimum sawing radius =====
 +//Table copied from the manual.//
 +
 +This is only a guide. Always err on larger radius side. Use relief cuts, and drill relief holes where necessary.
 +| Saw blade width | 1/8" | 3/16" | 1/4" | 3/8" | 1/​2" ​ | 5/8" | 3/4"|
 +| Minimum sawing radius | 3/16" | 5/8" | 1" | 1 1/2" | 2 1/2" | 4"| 5 3/4"|
 +
 +
 +===== Bandsawing practice =====
 +//Copied from the manual.//
 +
 +Maximum saw blade life : Medium saw blade tooth pitch, speed and feed.  ​
 +
 +Minimum sawing time : Coarse tooth pitch, fast speed and heavy feed.  ​
 +
 +Fine accurate finish : Fine tooth pitch, fast speed and light feed.
 +
 +===== Troubleshooting =====
 +//Copied from the manual.//
 +
 +
 +**Blade wanders from true line:**
 +  * Excessive feed pressure.
 +  * Blade teeth dull or of too fine pitch.
 +  * Guide inserts not controlling blade wear or incorrect adjustment.
 +  * Blade tracking incorrect.
 +  * Loss of set to one side of saw teeth.
 +
 +**Premature blade breakage:**
 +  * Excessive feed pressure, and/or too much blade tension.
 +  * Worn or incorrectly set guides.
 +  * Joint improperly welded and annealed.
 +  * Blade too wide for curved cut.
 +  * Bandwheels worn.
 +  * Blade teeth of too fine pitch.
 +
 +**Blade bows in deep cut:**
 +  * Excessive feed pressure.
 +  * Blade teeth dull or of too fine pitch.
 +  * Insufficient blade tension, and/or blade too narrow for depth of cut.
 +  * Blade running off at start of cut.
 +
 +**Blade teeth dull rapidly:**
 +  * Insufficient feed pressure.
 +  * Blade pitch too fine.
 +  * Guide inserts snagging set of teeth.
 +  * Speed too fast.
 +
 +**Teeth tron from blade:**
 +  * Excessive feed pressure.
 +  * Gullets of teeth loading.
 +  * Pitch of teeth too coarse.
 +  * Blade speed too fast
 +
 +**Blade developing twist:**
 +  * Excessive feed pressure.
 +  * Guide inserts snagging blade.
 +  * Blade too wide for radius of cut.
 +  * Excessive blade tension.
 +  * Blade not tracking correctly.
 +  * Loss of set to one side of saw teeth.
 +
 +**Blade vibrates in cut:**
 +  * Workpiece not properly seated or securely held.
 +  * Blade speed too fast, and/or blade pitch too coarse.
 +  * Insufficient blade tension.
  
 ===== Trainers & Maintainers ===== ===== Trainers & Maintainers =====
Line 48: Line 116:
   * Cameron Sharp (cazagen)   * Cameron Sharp (cazagen)
   * Mike Walters (miek)   * Mike Walters (miek)
 +  * Alfie Pates (alfie) ​
 +
 +===== Log =====
 +
 +//Started 09/06/2019 - maintenance prior to this may not be logged. //
 +
 +  * **01/​01/​1970** Template log entry. Copy this below. //Author//
 +  * **09/​06/​2019** Found tool in an unusable state. Blade tracking was completely out, blade falling off back of wheels. Guide bearings were also mis-adjusted - blade was being forced into them and making a very angry noise when pulled through by hand. Spent 45 minutes re-adjusting the blade tracking to get the blade running true again, re-adjusted blade tension and guide bearings. //Alfie//
startrite_bandsaw.1557506573.txt.gz · Last modified: 2019-05-10 16:42 by alfie