Published at Wednesday, 02 January 2019. Industrial Machinery. By Adelisa Legrand.
Cutting out the sub‐table shape on the band‐saw
Furthermost band saws, with my second homemade band saw usage trunnions to tilt the table. The motive trunnions are normally used is that they permit the table or the blade to tilt about an axis that is level with the top of the table. That way, a thin slot in the insert of the table will motionless line up with the blade when the table is tilted.
But for this band saw, I decided to usage pivots for tilting the table. I supposed trunnions might be a bit intimidating for persons to create, I went with pivots to simplify the design. The entire table base on this saw is really somewhat unusual, and pivots worked out quite well.
The main difficulty of pivots is that the upper of the table surface will move side to side with reverence to the blade as it's tilted.
As I often do, I used my Big Print program to print out a large 1:1 layout of the base of the table. The table consists of two layers of 3/4" (19 mm) Baltic birch plywood. The base coating has much of it cut away to create room for the pivots, blade guides, and lower wheel. The table is mounted as low as absolutely possible in order to maximize possible cutting depth while still using a standard distance 93.5" (2375 mm) blade.
I'm using a little chisel to punch over the pattern at the corners to transfer the marks through to the plywood. After that, I joined the 'dots' with pencil lines. I haven't destroyed the template so I can re-usage it for the main table later.
If you don't already have another band saw, it would create sense to create the main layer of the table first, and then usage that as a table to cut the lower layer. The lower layer is severely for stiffening the table, so the saw could be assembled and used without it.
I transferred the layout from the 1:1 template the same way. The rectangle under my index finger wants to be cut to a depth of about 5 mm to create room for the pivot pin. The line going off to the right is for the slot for inserting the blade. I ended up cutting that slot with the table saw to create it linear and wide sufficient to accommodate any band saw blade.
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