User Tools

Site Tools


startrite_bandsaw

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision
Previous revision
startrite_bandsaw [2018-09-10 11:26] – [TODO] mikestartrite_bandsaw [2022-06-18 21:18] (current) – [Log] New blade mike
Line 10: Line 10:
   * Drive belt: 50" external / 48" internal A-section V-belt   * Drive belt: 50" external / 48" internal A-section V-belt
  
 +Laser cuttable design for the acrylic piece that goes in the centre of the table, 8-9mm thick: {{ :startrite_bandsaw_cutout.dxf | startrite_bandsaw_cutout.dxf }}
 ===== 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)  
 +  * Mike Walters (miek)  
 + 
 +If something is up with the bandsaw please contact one of the following people: 
 +  * Cameron Sharp (cazagen) 
 +  * Mike Walters (miek) 
 +===== 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//  
 +  * **07/12/2019** Found the blade blunt. Cameron replaced it with a new one. //Vytas// 
 +  * **18/06/2022** Fitted a new blade as the old one was blunt. //Mike//
startrite_bandsaw.1536578806.txt.gz · Last modified: 2018-09-10 11:26 by mike

Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki