4747Re: 1-2-3 Blocks
- Nov 7, 2005How about making a threaded bush to go in the threaded holes. It can
then be drilled tapped to whatever thread you want, then fitted into
the block and held in with strong Loctite.
I haven't got any blocks yet , so don't know if this would be of
use, but it seems reasonable.
--- In GrizHFMinimill@yahoogroups.com, "trz200" <tdvorak@m...> wrote:
> Every member of this group who has purchased an economy set of 1-2-
> blocks have probably asked themselves the question: "What were
> thinking?". I attempted to enlarge the untapped holes to 3/8" by
> using a carbide boring bar. All that I accomplished was to break
> tip off.
> You mentioned that turning down a piece of threaded rod is "not a
> very good solution". I think it's a great solution and I commend
> for posting it! You should only have to turn it down to about
> If you are concerned with stripping the threads an alternate
> is to make a stud with 3/8"-16 threads 1/2" long on one end, 5-16"-
> 1/2" long on the other end and 11/32" dia. in the middle. One end
> engages a t-nut in the table slot, and the other end engages a
> 18 flange nut. You could make one 2" long for one block, 3" long
> two blocks, or 4" long for mounting a lower block flat, and the
> block on its edge. This should improve the useability of these
> --- In GrizHFMinimill@yahoogroups.com, "lecodtl" <nospam@b...>
> > I believe that my set of 123 blocks came from Lathemaster. I
> > them when I bought some other stuff to save shipping. I was
> > frustrated to discover that the 3/8 bolts that fit the threaded
> > in the blocks won't pass through the unthreaded holes in the
> > blocks. I expected I would be able to bolt them together to
> > things similar to angle plates or other shapes to create
> > But with smaller holes, this can't be done. I would definitely
> > have purchased them if the vendor had disclosed that the bolts
> > the threaded holes wouldn't clear the unthreaded holes. This is
> > defective merchandise, in my opinion.
> > I discovered that the blocks are so hard that I can't drill the
> > larger. Not only that, after drilling them during
> > they left large burrs in the holes in the blocks. The burrs are
> > hardened. I had to deburr them by driving a steel rod through
> > passage to break out the hardened burrs.
> > To use these blocks, I finally cut some threaded rod, chucked it
> > the lathe, and turned off the tops of the threads so that the
> > threaded rod would clear the unthreaded holes. Now I'm
> > about how hard I can tighten them without stripping the
> > a very good solution, but a solution of sorts.
> > Is it normal for 123 blocks to come like this? I basically
> > that I had been stupid in assuming that the unthreaded holes
> > when the product description only stated that the threaded holes
> > 3/8-16 and said nothing about the diameter of the unthreaded
> > Should I try to get the vendor to take these back as defective
> > give me a set that have holes that will let the 3/8" bolts
> > In other words, by definition of the use for 123 blocks, is a
> > with 3/8-16 holes which can't be bolted to another one with
> > 3/8 bolts defective, so that a vendor selling such blocks is
> > unethical not to mention that 3/8 bolts won't clear the
> > holes?
> > Dean
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