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- Newsgroups: rec.woodworking
- Path: sparky!uunet!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!jvnc.net!princeton!att!cbnewse!parnass
- From: parnass@cbnewse.cb.att.com (Bob Parnass, AJ9S)
- Subject: Re: Comments on Delta 16" Band Saw (28-560) please
- Organization: AT&T Bell Laboratories, Naperville, IL
- Date: Tue, 22 Dec 1992 20:38:36 GMT
- Message-ID: <1992Dec22.203836.28154@cbnewse.cb.att.com>
- Summary: Delta 3 wheeler problems discussed
- References: <1992Dec7.181152.8054@mcnc.org> <1992Dec22.185425.27938@bnr.ca>
- Lines: 64
-
- In article <1992Dec22.185425.27938@bnr.ca>, golka@bnr.ca writes:
-
- > I have a 16" three wheeler. My biggest beef is that you have
- > to skew stock about 10 degrees when ripping, or resawing.
- > This makes the fence useless, as the work wanders off the
- > fence, or binds against it. It may be I haven't got the
- > machine setup right. If anyone knows how to fix the, please
- > post the secret.
-
- > Beef #2 is that when resawing thick stock, or cutting lathe
- > blanks, the blade bows in towards the left side of the saw.
- > That is the blade at the middle of the cut thickness is
- > about 1/4" to the left of the top and bottom guides. This
- > gives a boards with convex, and matching concave cups to
- > them. By the time you plane them flat, the effective saw
- > kerf width is > 1/4"! Once again it may be a setup problem.
- > If anyone knows ho wto fix this PLEASE post a reply.
- > Thanks Bill Crick
-
- What size blade do you use which bows during resawing?
- What size wood?
-
-
- For a few years, I had an older Delta 16" 3-wheel bandsaw -- the same
- model you have but made in Canada and slightly beefier blade
- guide assembly. I experienced the same problems you did, and more.
- Some of them I solved after reading Duginske's classic Bandsaw
- Handbook -- very highly recommended.
-
- The Delta instructions aren't complete enough to teach one
- how to use and align a bandsaw, so read this book.
-
- For instance, alignment of the rip fence and miter gauge,
- along with changing the position of the blade on the tires,
- can compensate for the tendency of the saw to cut a few degrees off.
- Worked for me.
-
- Since I didn't know any better, I left tension on the blade
- at all times so I suspect the tensioning spring wore out, causing
- inaccuracy in the tension calibration.
- In retrospect, I should have tightened the blade more than I did
- or just buy a new spring.
-
- Using washers as shims, I aligned the cast iron table to be
- horizontal (at right angles to the blade). Too bad that wasn't
- good enough.
-
- After careful study and a wrecking some oak boards, I realized the
- construction of the table is such that the table can "twist" when
- tilting it, i.e., tilt in 2 directions simultaneously.
-
- The tilting mechanism is flimsy and trying to bend the 2 brackets
- in a vise didn't improve the accuracy enough.
- I couldn't think of a good way to solve that problem so I
- sold the saw and got a new Delta 14" 2-wheeler with height
- extension. What a difference! :-)
-
- The 14" 2 wheeler cuts better in most every way, but it does cost
- more money.
-
- PS - I now release the blade tension when not using the bandsaw.
- --
- ==============================================================================
- Bob Parnass, AJ9S - AT&T Bell Labs - parnass@ihlpm.att.com - (708)979-5414
-