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startrite_bandsaw [2018-09-10 11:26]
mike [TODO]
startrite_bandsaw [2019-06-19 19:39] (current)
alfie
Line 11: Line 11:
  
 ===== TODO ===== ===== TODO =====
-  * <​del>​Order new V-belt</​del>​ Arrived 
-  * <​del>​Order new gearbox oil</​del>​ Arrived 
-  * <​del>​Rewire motor for 220V and test with VFD</​del>​ 
-  * <​del>​Order gasket material</​del>​ Arrived 
-  * <​del>​Order DOL starter box (need to confirm current range first)</​del>​ Arrived 
-  * <​del>​Order/​find new seal for doors</​del>​ 
-  * <​del>​Trace existing gasket and laser a new one</​del>​ 
-  * <​del>​Clean,​ refill & reinstall gearbox</​del>​ 
-  * <​del>​Order switchgear</​del>​ 
-  * <​del>​Order new blade guide bearings</​del>​ 
-  * Install VFD, DOL starter, access control, and wire up 
   * Install dust collection   * Install dust collection
-  * Write some training docs +===== Training =====
-  * Fit new seal+
  
-===== Costs =====+Training for this tool can be given by either of the maintainers listed below.
  
-  * Bandsaw £250 +See [[https://​training.ehlab.uk|training.ehlab.uk]] for details.
-  * Delivery £148.66 +
-  * V-belt £3.99 +
-  * 5L gear oil £19.99 +
-  * Gasket paper £4.10 +
-  * DOL starter £29.99+
  
-Total so far£456.73+Also see [[https://ehs.yale.edu/​sites/​default/​files/​files/​vertical-band-saw.pdf|Yale Bandsaw Training]] for extra advice 
 + 
 +===== Speeds ===== 
 + 
 +^ Material ^ Speed (feet/min) (thickness < 0.5") ^ Speed (feet/min) (thickness > 0.5") ^ 
 +| Aluminium * | 1000 | 700 |  
 +| Brass  - Cast | 320 | 180 | 
 +| Brass - Soft | 1800 | 1000 | 
 +| Cardboard | 3200 | 3200 | 
 +| Copper * | 1800 | 1000 | 
 +| Iron - Cast | 180 | 100 | 
 +| Leather | 3200 | 3200 | 
 +| Plastics * *| 3200 | 3200 |  
 +| Rubber | 3200 | 3200 | 
 +| Silver | 1800 | 1800 | 
 +| Steel *| 180 | 180 | 
 +| 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 ===== 
 + 
 +The following members are authorised to provide bandsaw training: 
 + 
 +  * Cameron Sharp (cazagen)  
 +  * Alfie Pates (alfie)  
 +  * Mike Walters (miek)  
 + 
 +If something is up with the bandsaw please contact one of the following people: 
 +  * Cameron Sharp (cazagen) 
 +  * 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.1536578806.txt.gz · Last modified: 2018-09-10 11:26 by mike