Electronic components requirement.

Jul 02, 2020 Last reply: 6 years ago 57 Replies

Hi. I am fancying a little project using electrical components. I want to make a mini-mini-table saw. I've looked at the RS Components website and its all bit out there for me. I think I'd like it to run on battery power at this stage but I may be being naive. The work that the saw is being designed for cutting very thin sections of timber..2mm thick.



I will build a manifold/body from acrylic or something.



So what is a list of components I will need to complete this.



eg motor ( recommendations on this necessary) spindle, connectors, gears, battery holder type soldering iron. soldering consumables. etc.



Thanks.



Arthur


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Cutting 2mm thick slices of timber from what (what size is the original wood stock)? What type of blade were you considering?

Maybe look at buying a Chinese knock off Dremel type tool which already will have the necessary attachments. Or are you looking for something larger?

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I'm not interested in anything like that. I actually want to build a mini-mini-table saw.

Why now use a very sharp knife or scalpel then?

I want to build a very small table saw that uses a blade about 30mm diameter.

<snip>

Not sure I'd count that as an electrical components project, maybe an electro mechanical one at a pinch?

Possibly because it may not be the best place?

Depends on the size of the battery. ;-)

Whilst I believe balsa is a hardwood, it is very much easier to cut than say oak or mahogany.

<snip>

I think one of your main problems will be getting sufficient accuracy in the mount for the blade and stopping end-float etc, unless accuracy (something that would typically associated with such a small home made tool [1]) isn't an issue.

If it were my project, I think I might start with a suitable motor (that is probably going to have to be *very* small if direct driven and even with a 2mm cut on a 30mm diameter blade.

30/2 = 15, 2mm for the cut, say 3 to ensure it's cut though, that leaves 13 mm to get the table top thickness and motor radius, meaning the motor might only be 20mm diameter?

I have a 3D printer (for the table) and lathe (for motor / blade mounts etc) but I'm not sure you need to go so small to be able to cut material that thin, unless that size / scale is the key point?

Sawmill on a model railway layout?

Cheers, T i m

[1] Unless you were a precision engineer / watchmaker and had the skills / tools already?

"Demonstration of the MicroLux #60514 Multi-Saw...a Mini Scroll Saw for Hobby Use"

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It can use a reasonably thin blade.

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Paul

Because he wants to build a mini mini table saw.

RS is crazy overpriced. A rectangular section motor would help you get the spindle close enough. I don't know what power & rpm you'd want for 2mm wood.

If you can find a TCT blade it'll work much better & need way less sharpening. I've no clue if they exist at that size.

NT

Or a long shaft to get the motor away.

Or use a belt drive from a bigger one.

Typical small motor RPM is 10-60,000

you might want a 4:1 gear on that

He has specified a crazy solution to the problem of cutting 2mm material so thin you can do it far more accurately by hand with a sharp knife.

If he must persist in this madness then buying a Dremel tool or cheap clone from Aldi/Lidl and adding a table to it would be my suggestion.

If he must buy bits then RapidOnline will be much cheaper than RS provided he reached the minimum order value (ISTR £40).

I'd be more inclined to go for a tiny bandsaw configuration if I wanted to do this sort of thing seriously and in volume. A table saw is far too likely to snatch at thin wood whereas a band saw is quite well behaved.

The OP has to also consider the cutting speed - possibly if the motor runs too fast there is a danger of burning the wood with a fast moving blade actually rubbing on the cut edge.

There are lots of projects on YouTube to build your own table saw. Posted up by many folks worldwide with little access to Amazon etc, for polished finished goods.

As a hobby interest, go ahead.

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to make Mini Powerful Table Saw

But given that you've quoted the most expensive place on earth (tm) to buy electronic parts from, perhaps you may be amenable to spending £100 or so, on some thing ready built with the quirks worked out.

And also not spend some hours waiting for the 'glue' to set in A&E?

It's an unusual thing to want to make from scratch. Is there really nothing commercially available? With something like this making it yourself is likely to not be as good and cost more.

It would still need a long shaft, even if belt driven, to get the pulley out of the way.

Depends on the pulley diameter.

The Natural Philosopher was thinking very hard :

.and the thickness of the table. The pulley would need to be large enough, to provide enough friction so as not to slip when cutting.

You mean a circular saw? So only capable of cutting straight lines.

You mean for cutting timber sheet ~ 2mm thick? Or for cutting 2mm thick slices off larger timber?

What sort of blade diameter were you thinking about?

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