开云体育

It is not correct that all Chinese machine tools have metric fasteners. My HF
4x6 bandsaw has mostly fractional inch fasteners. The screws which form the
pivot for the motor mount, however, have a bastard thread which is 1/2"
diameter and fewer than 13 threads per inch. One of these screws was missing,
but a 1/2-13 UNC cap screw fitted the sheet metal captive "nut."
There is no stop to maintain the saw in an upright position. I took a
seven-inch-long piece of 1/8 x 1 flat stock, drilled a #19 hole 1.25" from one
end, laid it flat on the table near its end below the motor, pivoted it on an
8-32 screw tapped into the table, and filed a bit off the top of one corner.
Now when the saw is vertical, I rotate this steel bar to fit one corner under
the cast arm which holds the big spring. This locks the saw in a vertical
position, and is out of the way during normal use.
You need to make a spacer to fit above the clamp screw so that there is a
minimum amount of slop in the movable vise jaw. My saw came with no spacer, so
that the moveable vise jaw was immovable or floppy, depending on how tight its
hold-down screw was adjusted.
I braced the legs and put a 6-32 screw on the face of one leg to serve as
a hanger for the saw table when it is not in use. Some people make a new
table, but I find the one that was supplied to be adequate.
After these mocifications, this is a better saw than the U.S. made Wells
that I used in the shop many years ago.
Rupert

Rupert N. Evans
101 W Windsor Rd. #4107, Urbana, IL 61802-6697;
217-337-7833
Author of Book-On-Demand Publishing
I love to print and bind books and make model stationary steam engines

You need to make a spacer to fit above the clamp screw so that there

is a minimum amount of slop in the movable vise jaw

Kindly splain.

Paul R

The clamp to secure the work to be cut has a movable jaw. This jaw slides in a
slot which is machined into the base. Below it is a flat plate which slides
below the slot. These two pieces are held together with a cap screw.
When my saw arrived, I found that if I tightened down this cap screw, it
made the movable jaw immovable. However, I made a metal spacer which fits
between the movable jaw and the plate which slides below it. The spacer has a
hole through it to accomodate the cap screw.By adjusting the thickness of the
spacer I was able to tighten the cap screw fully, and still move the movable
jaw back and forth.
The bottom of the slot is not machined. You may have to barber some
material off the bottom of the slot to allow the movable jaw+spacer+flat
plate+cap screw to slide back and forth easily. Fortunately, I did not need to
do this.
I hope this expanded explanation helps.
Rupert

Date: Sun, 25 May 2003 02:19:54 -0000
From: "Paul" <proosta@...>
Subject: Re: Chinese fasteners and miscellaneous

You need to make a spacer to fit above the clamp screw so that there

is a minimum amount of slop in the movable vise jaw

Kindly splain.

Paul R



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Rupert N. Evans
101 W Windsor Rd. #4107, Urbana, IL 61802-6697;
217-337-7833
Author of Book-On-Demand Publishing
I love to print and bind books and make model stationary steam engines