|
Posted by Alan Bain on July 12, 2008, 12:36 pm
Please log in for more thread options
I have a small Chester H110 metal cutting band saw which periodically decides
to cut less square than I would like. When I first bought it, it cut
decidely squint, but the cause was obiously work shifting in the "rapid
action" vice and Chester duly replaced it with one which works properly.
The user guide is not too helpful on this point, it says "unplug
machine, loosen nuts, adjust, tighten nut, reconnect power" but gives
no idea what "adjust" should involve.
On dismantling I found the boss on one of the band pulleys was still
rough from the casting and this was binding, but this was rectified
in the lathe.
Now it cuts pretty square; at least well enough to cut bar section to
face off in the lathe, but having used other metal cutting band saws
I think it could be better. Does anyone know of a book/article on
adjusting/improving these machines? I'm quite happy to make
modifications to the machine if they will make it work better.
Alan Bain
|
|
Posted by mark on July 12, 2008, 1:42 pm
Please log in for more thread options
> I have a small Chester H110 metal cutting band saw which periodically dec=
ides
> to cut less square than I would like. =A0When I first bought it, it cut
> decidely squint, but the cause was obiously work shifting in the "rapid
> action" vice and Chester duly replaced it with one which works properly.
>
> The user guide is not too helpful on this point, it says "unplug
> machine, loosen nuts, adjust, tighten nut, reconnect power" but gives
> no idea what "adjust" should involve.
>
> On dismantling I found the boss on one of the band pulleys was still
> rough from the casting and this was binding, but this was rectified
> in the lathe.
>
> Now it cuts pretty square; at least well enough to cut bar section to
> face off in the lathe, but having used other metal cutting band saws
> I think it could be better. =A0Does anyone know of a book/article on
> adjusting/improving these machines? =A0I'm quite happy to make
> modifications to the machine if they will make it work better.
>
> Alan Bain
When the blades get a bit worn ...they usually dont cut square
Because you are pushing the work harder into the blade for the same
results ..which makes the blade distort...on these smaller machines.
try changing for a new one ...and see ..
if it makes no difference ...
come back
all the best.mark
|
|
Posted by Don Young on July 12, 2008, 9:32 pm
Please log in for more thread options
> I have a small Chester H110 metal cutting band saw which periodically
> decides
> to cut less square than I would like. When I first bought it, it cut
> decidely squint, but the cause was obiously work shifting in the "rapid
> action" vice and Chester duly replaced it with one which works properly.
>
> The user guide is not too helpful on this point, it says "unplug
> machine, loosen nuts, adjust, tighten nut, reconnect power" but gives
> no idea what "adjust" should involve.
>
> On dismantling I found the boss on one of the band pulleys was still
> rough from the casting and this was binding, but this was rectified
> in the lathe.
>
> Now it cuts pretty square; at least well enough to cut bar section to
> face off in the lathe, but having used other metal cutting band saws
> I think it could be better. Does anyone know of a book/article on
> adjusting/improving these machines? I'm quite happy to make
> modifications to the machine if they will make it work better.
>
> Alan Bain
When the blades get a bit worn ...they usually dont cut square
Because you are pushing the work harder into the blade for the same
results ..which makes the blade distort...on these smaller machines.
try changing for a new one ...and see ..
if it makes no difference ...
come back
all the best.mark
Also be aware that the blade must be uniform on both sides to cut straight.
If it was initially manufactured poorly or has been dulled on one side it
will cut toward the sharp side in spite of any alignment efforts. You might
want to try a new high quality blade.
Don Young (USA)
|
|
Posted by Alan Bain on July 13, 2008, 1:47 pm
Please log in for more thread options >> I have a small Chester H110 metal cutting band saw which periodically dec=
>ides
>> to cut less square than I would like. =A0When I first bought it, it cut
>> decidely squint, but the cause was obiously work shifting in the "rapid
>> action" vice and Chester duly replaced it with one which works properly.
>>
>> The user guide is not too helpful on this point, it says "unplug
>> machine, loosen nuts, adjust, tighten nut, reconnect power" but gives
>> no idea what "adjust" should involve.
>>
>> On dismantling I found the boss on one of the band pulleys was still
>> rough from the casting and this was binding, but this was rectified
>> in the lathe.
>>
>> Now it cuts pretty square; at least well enough to cut bar section to
>> face off in the lathe, but having used other metal cutting band saws
>> I think it could be better. =A0Does anyone know of a book/article on
>> adjusting/improving these machines? =A0I'm quite happy to make
>> modifications to the machine if they will make it work better.
>>
>> Alan Bain
>
>When the blades get a bit worn ...they usually dont cut square
>
>Because you are pushing the work harder into the blade for the same
>results ..which makes the blade distort...on these smaller machines.
>
>try changing for a new one ...and see ..
>
>if it makes no difference ...
>come back
Thanks for the advice. I have just fitted a new blade and it makes
a huge difference; on taking the old one into the house the teeth are
positively rounded. Now cutting much more squarely, but still not as
good as I would hope for. Cut is square in the direction of the blade,
but not in the vertical plane.
I'm suprised that it wore out so soon; it was a Chester carbon steel blade
which has been on the machine since I bought it, but I am only using it
as a light amateur user mainly to save effort when cutting steel sections
to put in the lathe so probably the machine has made a maximum of say
100 cuts. I would probably have been better off with a small hacksaw
machine, but they seemed very much more expensive than metal cuting
bandsaws and I had previously used a Warco one successfully in a club.
Replacement is also a Chester blade so I'll see how long it lasts!
Alan
|
|
Posted by Mark Rand on July 13, 2008, 4:53 pm
Please log in for more thread options On 13 Jul 2008 18:47:45 +0100 (BST), Alan Bain
>
>I'm suprised that it wore out so soon; it was a Chester carbon steel blade
>which has been on the machine since I bought it, but I am only using it
>as a light amateur user mainly to save effort when cutting steel sections
>to put in the lathe so probably the machine has made a maximum of say
>100 cuts.
Is this bandsaw one of the ones with three speed pulleys on the motor/gearbox.
If so, what speed is the saw set to? I find that my little 6"x4" bandsaw cuts
quite reasonably on the slowest setting (65ft/min).
Mark Rand
RTFM
|
| Similar Threads | Posted | | sheet metal shears and cutting 3mm aluminium | June 11, 2008, 5:40 am |
| Got a bandsaw, now to cut aluminium... | October 11, 2006, 6:57 pm |
| Anyone 'speak' Startrite Bandsaw? | August 15, 2006, 4:21 pm |
| Bandsaw Blade for Aluminium | September 27, 2008, 9:21 am |
| chester aftersales service | September 30, 2006, 3:29 pm |
| chester aftersales service result | October 5, 2006, 1:37 pm |
| Parallel 'turning' a square bar | March 7, 2008, 5:59 am |
| Looking for a 1" square drive breaker bar | March 28, 2008, 4:37 pm |
| Square 'Doweling' source? | April 28, 2008, 9:49 pm |
| Shear strength of 3/4" square steel? | August 10, 2006, 3:20 pm |
|
|
Yahoo! 
Google 
Windows Live 
del.icio.us 
digg 
Netscape 
XML Sitemap