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Re: ER32 Collet Chuck
开云体育Hello Dick: No, it fits fine. Really it isn't any larger in diameter that the 3 jaw chuck, it just sticks out farther. In my mind
the only advantage to the ER16 is you can buy the chuck ready
made. Carl. On 9/22/2024 10:27 PM, OldToolmaker via
groups.io wrote:
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Re: Saw blades for the Emco Unimat jig saw accessory, answer to Herman de Leeuw
Glad my suggestion seemed attractivr and I hope the seller will provide you with some useful answers to your questions! Also glad you had no problem to consult that website in Dutch. Veel succes en houd ons op de hoogte, Herman?
? Van: via groups.io <michel.lebacq@...> Verzonden: maandag, september 23, 2024 12:44 PM Aan: Herman de Leeuw <herman.deleeuw@...>; [email protected] <[email protected]> Onderwerp: Re: [Unimat] Saw blades for the Emco Unimat jig saw accessory, answer to Herman de Leeuw ? Hallo,
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Thanks for your message. In the meantime I wrote a message to the seller of sablades, I'm expecting his answer.
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Enne, natuurlijk vind ik het fijn om een nederlandstalige leverancier te vinden!
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Re: ER32 Collet Chuck
Carl, I keep vacillating between ER32 and ER16. I have all the ER32 collets.
Did you have any problems finding enough “RealEstate” or room to fit the ER32 in?
Dick
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http://www.homemadetools.net/ ?SMALL TURRET TOOL POST PLANS? ?LARGE TURRET TOOL POST PLANS ?MINI- ?SMALL QC TOOL POST PLANS? ?QUICK CHANGE LATHE TURRET ?MINI LATHE COMPOUND PIVOT MODIFICATION |
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Re: ER32 Collet Chuck
开云体育Hi Dick: I cut off a CAT40/ER32 holder and welded in a bushing for M12x1: /g/Unimat/photo/195716/2246540?p=Name%2C%2Cer32%2C20%2C1%2C0%2C0 With a little fine tuning it works fine. I really like it for wood since its range is large and it doesn't leave jaw marks. Also it can
hold any size milling cutter. Carl. On 9/21/2024 9:43 PM, OldToolmaker via
groups.io wrote:
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Re: HELP with FRET SAW Guide
开云体育Hi All, ? This latest string about the Unimat DB/SL Sabre saw and Fret saw has reminded me that I could use some help from the group. ? ? The blade guide “tube” for the Unimat fret saw appears to really be just a rod with a slot in it to guide the blade.? There is a short tube (possibly split at the back) that fits over the bottom end of the rod to keep the blade captive in the slot.? (Please see the attached illustration and instructions.)
Unfortunately, my own Unimat fret saw was missing the guide rod when I received it and I will have to make one (as I have never seen that part come up for sale).? If anyone does have this part, I would greatly appreciate it if you could measure it (length, diameter, slot width and slot depth) and send me the dimensions. ?? ? With many thanks, ? Jerry F. ? ? |
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ER32 Collet Chuck
I have a full set of ER32 collets and a collet nut. I want to use them on my DB200 Unimat in lathe mode. The only lathe I have at this time is my Unimat.
As I see it my best option is to single point thread a new Unimat spindle nose to fit the ER32 collet nut I have. I have 6 Unimat spindles So that should be no problem.
Does anyone in the group have any suggestions that might be better than what I have proposed?
Dick
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http://www.homemadetools.net/ ?SMALL TURRET TOOL POST PLANS? ?LARGE TURRET TOOL POST PLANS ?MINI- ?SMALL QC TOOL POST PLANS? ?QUICK CHANGE LATHE TURRET ?MINI LATHE COMPOUND PIVOT MODIFICATION |
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Re: Saw blades for the Emco Unimat jig saw accessory
I have the model 1070 saw with round table and a spring arm so I was referring to this model in my explanation.
The principal remains the same, the object is to eliminate blade flex.
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I see the later models use a blade guide tube assembly so I presume there is no return spring inside the tube.
My guess this blade guide tube would need to be adjusted down to the just above the surface of the stock being cut to eliminate blade flex.
There may also be some way to adjust for the width of the blade but I can find no references to it's function.
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There are instructions for using the later (model 1080) Jigsaw and Saber saw attachment to be found in the files section under "1971 Miniature Machining Techniques Part 2" on page 39. This is for the DB/SL models but it looks like the mechanism is essentially? the same as the Unimat 3 Jigsaw and Saber saw accessory.
here is the URL:
/g/Unimat/files/Unimat_Too/Miniature%20Machining%20Technique/1971%20Miniature%20Machining%20Techniques%20Part%202.pdf
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By the way there is a difference between scroll saw and jig saw blades, jig saw blades have a set to the teeth which makes a wider kerf and scroll saw blades do not have a set so the kerf is the actual width of the blade. Now reciprocating (saber) saw blades are often called of as? jig saw blades.
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This is the type 1070 scroll saw attachment I have.
The blade return spring is the long thin metal section attached to the arm.
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This is a picture of a vintage jig saw before "Jig Saw" became generic for what is actually a hand held reciprocating saw.
Notice the cylinder on the arm above the table, this is where the blade return spring is housed.
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Re: Saw blades for the Emco Unimat jig saw accessory
开云体育Your description is more like that of the fret saw for the DB-200 /SL (which is the saw that I have). ?How about including a picture of your saw that shows all of its parts so any advise we provide will be appropriate for the saw you actually have.? ? Thanks, ? Jerry F.? ? From: [email protected] [mailto:[email protected]] On Behalf Of Herman de Leeuw via groups.io
Sent: Saturday, September 21, 2024 1:04 AM To: Richard Burrows; [email protected] Subject: Re: [Unimat] Saw blades for the Emco Unimat jig saw accessory ? Thank you for this useful explanation!? ? Just one comment: The spring arm is in use with the DB and SL scroll saws but the Unimat 3 has no spring arm; the fret saw’s tension at the U3 depends on the downward cutting force, with the fret saw moving inside a somewhat tight tube that is held in place by the arm, without any spring involved. ? Verzonden vanuit ? Van: Richard Burrows <bluerandonee@...> ? The Unimat scroll saw uses a spring arm to maintain tension on the blade. ? With spring tension return jig saws when you run the saw too fast the spring does not have time to return and can not keep the blade under continuous tension, this causes the blade to flex and the blade will fail from repeated bending. (Think of bending a solid wire over and over, it gets hot at the bend and then it breaks at the bend from metal fatigue.) ? Thin fret and scroll saw blades can make tighter turns but you must keep the speed very low to maintain spring tension and avoid blade flex since the thin blade flexes more and it doesn't take long to fatigue the thin metal. Thicker jig saw blades can last longer at slightly higher speeds since they don't flex quite as much but they can't make tight turns. ? Modern types of scroll saws use a parallelogram drive mechanism to maintain constant blade tension and also keep the blade perpendicular to the table through each stroke (assuming the table is not set at an angle) so the saw can be run much faster without premature blade failure. ? Of course there are other factors that contribute to premature blade failure such using a blade which has too many or too few teeth for the material, cutting stock that is too thick, or pushing the material into the blade too fast, all this can overheat and/or flex the blade causing it to fail no matter what saw you are using. ? Push the stock into the blade only as fast as it cuts, don't get in a hurry and force it. ? Also the teeth must cut toward the table.... ? Richard ?
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Re: Saw blades for the Emco Unimat jig saw accessory
Thank you for this useful explanation!? Just one comment: The spring arm is in use with the DB and SL scroll saws but the Unimat 3 has no spring arm; the fret saw’s tension at the U3 depends on the downward cutting force, with the fret saw moving inside a somewhat tight tube that is held in place by the arm, without any spring involved.
? Van: Richard Burrows <bluerandonee@...> Verzonden: vrijdag, september 20, 2024 10:53 PM Aan: Herman de Leeuw <herman.deleeuw@...>; [email protected] <[email protected]> Onderwerp: Re: [Unimat] Saw blades for the Emco Unimat jig saw accessory ? The Unimat scroll saw uses a spring arm to maintain tension on the blade.
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With spring tension return jig saws when you run the saw too fast the spring does not have time to return and can not keep the blade under continuous tension, this causes the blade to flex and the blade will fail from repeated bending. (Think of bending a solid wire over and over, it gets hot at the bend and then it breaks at the bend from metal fatigue.)
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Thin fret and scroll saw blades can make tighter turns but you must keep the speed very low to maintain spring tension and avoid blade flex since the thin blade flexes more and it doesn't take long to fatigue the thin metal.
Thicker jig saw blades can last longer at slightly higher speeds since they don't flex quite as much but they can't make tight turns.
?
Modern types of scroll saws use a parallelogram drive mechanism to maintain constant blade tension and also keep the blade perpendicular to the table through each stroke (assuming the table is not set at an angle) so the saw can be run much faster without premature blade failure.
?
Of course there are other factors that contribute to premature blade failure such using a blade which has too many or too few teeth for the material, cutting stock that is too thick, or pushing the material into the blade too fast, all this can overheat and/or flex the blade causing it to fail no matter what saw you are using.
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Push the stock into the blade only as fast as it cuts, don't get in a hurry and force it.
?
Also the teeth must cut toward the table....
?
Richard
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Re: Saw blades for the Emco Unimat jig saw accessory
The Unimat scroll saw uses a spring arm to maintain tension on the blade.
?
With spring tension return jig saws when you run the saw too fast the spring does not have time to return and can not keep the blade under continuous tension, this causes the blade to flex and the blade will fail from repeated bending. (Think of bending a solid wire over and over, it gets hot at the bend and then it breaks at the bend from metal fatigue.)
?
Thin fret and scroll saw blades can make tighter turns but you must keep the speed very low to maintain spring tension and avoid blade flex since the thin blade flexes more and it doesn't take long to fatigue the thin metal.
Thicker jig saw blades can last longer at slightly higher speeds since they don't flex quite as much but they can't make tight turns.
?
Modern types of scroll saws use a parallelogram drive mechanism to maintain constant blade tension and also keep the blade perpendicular to the table through each stroke (assuming the table is not set at an angle) so the saw can be run much faster without premature blade failure.
?
Of course there are other factors that contribute to premature blade failure such using a blade which has too many or too few teeth for the material, cutting stock that is too thick, or pushing the material into the blade too fast, all this can overheat and/or flex the blade causing it to fail no matter what saw you are using.
?
Push the stock into the blade only as fast as it cuts, don't get in a hurry and force it.
?
Also the teeth must cut toward the table....
?
Richard
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Re: Saw blades for the Emco Unimat jig saw accessory
Bonsoir, Micehl,
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Apologies for the late input but if you would not mind visiting a Dutch language website, please check out. They specialize in jig saw blades and have a whole section on machine jig saw blades. Just one, perhaps really obvious advice beforehand: The cutting action should always be towards the downward stroke.
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Herman
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Re: Vintage IME Watchmakers Lathe with Case up for auction on Goodwill
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Carl
Herman de Leeuw
OldToolmaker
