Speed controller

[Parm]

can someone point me to a speed controller that I can use with a cheapo jigsaw

 

[eLuSiVeMiTe]

Does it need to fit inside the housing or is it a scrollsaw type project

 

[Shox Dr]

A 1kw plug top light dimmer will work. You’ll loose torque the slower it goes, making to blade stay still and the machine to jump about. Bugger to hold on to without a lot of downward pressure, then it can stall the machine

 

[slim_boy_fat]

can someone point me to a speed controller that I can use with a cheapo jigsaw

What make is it? My ancient 'Red Devil' one has a built-in speed control.

 

[frank horton]

so's my Festool....slightly less aggressive blade perhaps ??

 

[Parm]

Should have made myself clearer. I want to have a go at making a scrol saw type machine. I want to disable the inbuilt switch and speed control (or tape it up so it’s always on) and have an external rotary speed control

 

[eLuSiVeMiTe]

Should have made myself clearer. I want to have a go at making a scrol saw type machine. I want to disable the inbuilt switch and speed control (or tape it up so it’s always on) and have an external rotary speed control

Do you want a scroll saw mate.

Have a sip in the shed.
Let me know and I'll pull it out.

 

[eLuSiVeMiTe]

Like this.

 

[Parm]

Do you want a scroll saw mate.

Have a sip in the shed.
Let me know and I'll pull it out.

I just can’t make space for another machine I’ll only use a few times a year

Thanks for the offer

 

[eLuSiVeMiTe]

I just can’t make space for another machine I’ll only use a few times a year

Thanks for the offer

Damm. I was looking forward to the shelf space.

Should post it up here really. They seem to be snapped up.

 

[choco]

Is it a DC motor?? I used the the controller below to power a treadmill motor for my mini mill. It's an SCR controller.

https://s.click.aliexpress.com/e/cgXOb7yd

 

[Agroshield]

I want to disable the inbuilt switch and speed control (or tape it up so it’s always on) and have an external rotary speed control

If you do go with the light dimmer, you might have to bypass the internal speed control as it is not clear if the two will play well together.

If you do not already have the JS, perhaps look for one that is fixed speed to avoid this potential issue.

 

[slimjim]

Would one of these work?

https://www.ebay.co.uk/itm/Electric...hash=item287d8862fa:m:mumr4Hb1AtwFb04ZO13_8Rg

 

[bigegg]

https://www.mig-welding.co.uk/forum/threads/mains-motor-speed-controller.70414/#post-946165

 

[hotponyshoes]

Could you not remove the internal one and mount it remotely?

 

[Screwdriver]

can someone point me to a speed controller that I can use with a cheapo jigsaw

Depends on the type of motor surely?

 

[Parm]

Depends on the type of motor surely?

I don’t know what type it f motor it is.

Can anyone shed some light on this ?

 

[rtbcomp]

If it's got a commutator and field coils it's a universal motor and will work on AC or DC, if it's got a commutator and a permanent magnet it's DC only, but you may get away with AC, if it doesn't have a commutator then it's an AC induction motor or some fancy electronically controlled one.

A basic SCR/Triac speed controller will work with a universal motor, a DC motor will be best with a pulse width modulated (PWM) controller and an indudtion motor will require a variable frequency drive (VFD). The other fancy motors will usually have their own control circuits.

Some close-up photos of the internals of the motor will help.

 

[rtbcomp]

https://www.mig-welding.co.uk/forum/threads/mains-motor-speed-controller.70414/#post-946165

I've got one of those, OK for constant load, but as I increased the load I had to turn the power up to maintain the speed.

Would one of these work?

https://www.ebay.co.uk/itm/Electric...hash=item287d8862fa:m:mumr4Hb1AtwFb04ZO13_8Rg

They call that a rehostat and say it can handle 15amps/1.5Kw. I doubt that a rehostat that can handle 15amps/1.5 Kw will fit in a plastic box that size without melting it.

 

[Parm]

If it's got a commutator and field coils it's a universal motor and will work on AC or DC, if it's got a commutator and a permanent magnet it's DC only, but you may get away with AC, if it doesn't have a commutator then it's an AC induction motor or some fancy electronically controlled one.

A basic SCR/Triac speed controller will work with a universal motor, a DC motor will be best with a pulse width modulated (PWM) controller and an indudtion motor will require a variable frequency drive (VFD). The other fancy motors will usually have their own control circuits.

Some close-up photos of the internals of the motor will help.

Thanks Very helpful

Tommorow I’ll do a bit Of dismantling and take some pictures.