Coating is continuing..., despite the heat...
Sometimes, I think of doing the coating out
in the open, not sweating it out in my coating shed.
That would be ever so nice, but in reality I cannot do that.
I do not have the retarder and the strong summer sunlight
will immediately solidify the coating, no good at all...
Today, I meant to talk about the shatter locking device, but
let me start with this illustration as per below.
In order to simplify my reference line drawing I used the
same L shaped jig, as shown in C. Today, I was, for a time,
regretting it, becasue the space created by the jig as in A
is too large at a glance, but then I was forgetting the fact
that I was going to elongate the hole. The blue area in B is a cut.
All in all, my istinctive decision to use the same jig paid off
hundsomely! So much so, and not shown here, I prepared 3 more
for my containers today. In the end I will have to make
40 odd containers. But then, I now know how to go about this!
Above?, today's (only) result...
Above? the container is opened up and you should be
able to see the elongated hole on the top lid, at the left end.
I am over the Moon on this. Opeing the lids has become
ever so easier!
Now, let me get started on this shatter linking issue.
The idea here is that instead of linking the shatters together,
with the gum tapes on the inside, I am exploring simpler
mechanical devices. Gum tapes are sticky and leave traces
all over the place and the whole thing has to be done with
the lights on...
Take a look at the following illustration.
A is a schematics of typical shatters, seen dead on.
Shatters are corrugated, universally, and you may regard the
blue horizontal bars as their crests, and white spaces
as troughs. The vertical black bars are reinforcing
elements, and behind these at the troughs positions
are spaces, which I want to make use of.
You can stick things in there!
What I want to insert in these spaces are shown in red in B.
Once the hook portion of them are securely in place behind
the reinforcing vertical bars you can lock them with a nut
and bolt, shown here, simplified with a black bar down
in the middle of the configuration.
All this is no good, is it, as it stands? Simply because
my mother will not approve of it. The nut and bolt locking
mechanism will be conspicous and easily be unlocked.
So, you need an additional, precautional piece. C may
be the answer. This is a separate metal piece, with an
elongated space enclaved by my milling machine,
as shown in red. There is a hole, as shown in black,
so that the nut and bolt can go through this hole.
Inside the elongated space will be a piece of a thin soft iron
plate. It can move about horizontally, how?, you might ask...
My straight answer to that is the use of a very strong
magnet. See below.
The concentric thing is the magnet, the triangular thing
is a steel saw, all sitting atop a large brass plate. I did try
to move the saw across the brass plate.
It does work and I can move the steel piece in any direction
I want, even vertically. So, my tentative conclusion, based
on my preliminary experiment, is that a small piece of
soft iron plate can act as a shatter to the hole. Once the hole
is covered by the iron plate it will be rather difficult to
undersnd the locking mechanism.
OK, you may say that the burgler can poke at the iron plate
with a stick and move it sideways, with the friction...
Yes, I am aware of that, but I could make a small cut, both in
the shatter container and the iron plate itself, so that they
can be enmeshed by gravity, when the iron plate is moved horizontally.
My techinical skills? No problem, and I have everything
I need. Take a look at the next image.
These are gears I made for something else, made of brass, 8mm thick.
I am not just a simple artisan in wood working...
I have metal working skills, too, and I learnt all these
while I was a postgraduate at Imperial College, London.
The shatter casing will be welded onto the outermost
hook, the skill of which I also learned while at the college...
Being a physicist, I am proud of the skills I have
available to myself. My fellow classmates at the college
also share these skills, amazing, is it not?
After all, if you are doing your postgraduate research
you need to construct your own experimental setup,
all by yourself. You just cannot buy things off the shelf.
You contribute to the world of knowledge by making your own
experimental setup, using everything you have available!
Be it metal cutting, be it welding, be it whatever!!!
If you cannot do that you will not get your PhD!!!
Sometimes, I think of doing the coating out
in the open, not sweating it out in my coating shed.
That would be ever so nice, but in reality I cannot do that.
I do not have the retarder and the strong summer sunlight
will immediately solidify the coating, no good at all...
Today, I meant to talk about the shatter locking device, but
let me start with this illustration as per below.
In order to simplify my reference line drawing I used the
same L shaped jig, as shown in C. Today, I was, for a time,
regretting it, becasue the space created by the jig as in A
is too large at a glance, but then I was forgetting the fact
that I was going to elongate the hole. The blue area in B is a cut.
All in all, my istinctive decision to use the same jig paid off
hundsomely! So much so, and not shown here, I prepared 3 more
for my containers today. In the end I will have to make
40 odd containers. But then, I now know how to go about this!
Above?, today's (only) result...
Above? the container is opened up and you should be
able to see the elongated hole on the top lid, at the left end.
I am over the Moon on this. Opeing the lids has become
ever so easier!
Now, let me get started on this shatter linking issue.
The idea here is that instead of linking the shatters together,
with the gum tapes on the inside, I am exploring simpler
mechanical devices. Gum tapes are sticky and leave traces
all over the place and the whole thing has to be done with
the lights on...
Take a look at the following illustration.
A is a schematics of typical shatters, seen dead on.
Shatters are corrugated, universally, and you may regard the
blue horizontal bars as their crests, and white spaces
as troughs. The vertical black bars are reinforcing
elements, and behind these at the troughs positions
are spaces, which I want to make use of.
You can stick things in there!
What I want to insert in these spaces are shown in red in B.
Once the hook portion of them are securely in place behind
the reinforcing vertical bars you can lock them with a nut
and bolt, shown here, simplified with a black bar down
in the middle of the configuration.
All this is no good, is it, as it stands? Simply because
my mother will not approve of it. The nut and bolt locking
mechanism will be conspicous and easily be unlocked.
So, you need an additional, precautional piece. C may
be the answer. This is a separate metal piece, with an
elongated space enclaved by my milling machine,
as shown in red. There is a hole, as shown in black,
so that the nut and bolt can go through this hole.
Inside the elongated space will be a piece of a thin soft iron
plate. It can move about horizontally, how?, you might ask...
My straight answer to that is the use of a very strong
magnet. See below.
The concentric thing is the magnet, the triangular thing
is a steel saw, all sitting atop a large brass plate. I did try
to move the saw across the brass plate.
It does work and I can move the steel piece in any direction
I want, even vertically. So, my tentative conclusion, based
on my preliminary experiment, is that a small piece of
soft iron plate can act as a shatter to the hole. Once the hole
is covered by the iron plate it will be rather difficult to
undersnd the locking mechanism.
OK, you may say that the burgler can poke at the iron plate
with a stick and move it sideways, with the friction...
Yes, I am aware of that, but I could make a small cut, both in
the shatter container and the iron plate itself, so that they
can be enmeshed by gravity, when the iron plate is moved horizontally.
My techinical skills? No problem, and I have everything
I need. Take a look at the next image.
These are gears I made for something else, made of brass, 8mm thick.
I am not just a simple artisan in wood working...
I have metal working skills, too, and I learnt all these
while I was a postgraduate at Imperial College, London.
The shatter casing will be welded onto the outermost
hook, the skill of which I also learned while at the college...
Being a physicist, I am proud of the skills I have
available to myself. My fellow classmates at the college
also share these skills, amazing, is it not?
After all, if you are doing your postgraduate research
you need to construct your own experimental setup,
all by yourself. You just cannot buy things off the shelf.
You contribute to the world of knowledge by making your own
experimental setup, using everything you have available!
Be it metal cutting, be it welding, be it whatever!!!
If you cannot do that you will not get your PhD!!!
