On 3/5/2019 11:30 AM, Terry Coombs wrote:
Â* This morning I braved the cold to make an alignment block so I could
try welding that broken bandsaw blade . Milled a half inch wide by
.023" deep slot down the length of a piece of aluminum ingot (from
melted scrap) followed by a quarter inch slot along one edge , .050"
deep , for tooth clearance . Added a .050 deep cross slot in the
middle for clearance under the blade so shield gas could get down
there . I clamped the blade with the ends just touching using a couple
of short bar clamps - which will be replaced with a screw and washer -
and welded it at about 12 amps using some 1/16" ER312 . Tested it on a
piece of half inch steel 2" wide cutting thru the half inch dimension
. Left it cutting for a quick run into the house and when I came back
the blade had stalled . I checked , I hadn't ground the blade all the
way back to original thickness and it was hanging in the cut . Couple
of minutes with the Dremel and we be jammin' now . I'm not planning on
making my own bands , but it sure is handy to be able to repair one if
needed - I did melt a couple of teeth , so this band will not be used
for stock under 1/4" .

Â*Snag
Yes , I'm old
and crochety - and armed .
Get outta my woods !

Â* Oops , spoke too soon . It broke on the second cut right at the weld
.. I'm not sure if it's because of my filler selection or because I
didn't anneal it afterward . But hey , I still got the block and
somewhere around here is a coil of silver solder . So not a totally
wasted morning anyway .

--
Snag
Yes , I'm old
and crochety - and armed .
Get outta my woods !