My scrollsaw is losing tension. The blades are tight, but it is still losing tenison.

https://forum.scrollsawer.com/forum/scroll-saw/tools-and-blades/52032-dw788-speed-control-issue

make sure that the thread is between the tension plates and has not jumped out and is dragging on the thread bolt or springs

Try some blue LocTite thread fastener. It's an anaerobic-hardening resin. Remove the knob enough to get a drop onto the threads, then snug it up. Going forward, repeat as necessary. Just a drop.
Better than lock-washers. Scrollsaws basically just vibrate their little blades up & down.

You have poor quality blades (try Olsen blades), or
You're forcing the work past the blade (just "offer" the work to the blade, let it cut, don't force it to cut), or
Your tension is too high, or
Your tension is too low, or
Your blades are getting installed upside-down (teeth point DOWN).

Loosen the screws that hold the blade in place and make it "shorter" by pushing the blade in. Put the chain on it and extend the blade out until it's tight again, but not too tight. It should have a little give to it. Retighten the screws that hold the blade in place.

Hi there
regarding E005 , E004 at JUKI lock stitch machine means :
E004:
=====
synchronizer lower position sensor failure ( please check if socket is connect secure or lose connect - please check belt tension if lose please made more tight for belt tension.
E005:
synchronizer upper position sensor failure ( please check if socket is connect secure or lose connect - please check belt tension if lose please made more tight for belt tension.
if still not solve please change synchronizer with new one.
BEST REGARDS
ASHRAF
CAIRO - EGYPT
[email protected]

ryobi is not that hot brand, material used by them is worthless and suitable for occasional use only. i would suggest another brand...

it is slight possibility that you pressurise material against the blade too much, but then you would burn the blade not the tensioner. you will break the blade before you break tension rod.

personally i am using craftsman and bosh, both are nearly as old as i am and insofar never replaced (beside the blades and bushes on the motors) any parts on them.

if you need to change tensioner, then something is definitely wrong with machine, i am using bosh for nearly 40 years, craftsman nearly 30 years and never replaced tensioners or indeed anything in them. scrollsaw is by definitionbuild to take this punishment, you change blades sometime several times on single piece, especially when you do coarse and then detail cut. would suggest ditch that one and buy better one...

by the way, i am doing parquetry, inlays and marquetry on mine...

Instruction to assemble a clipper blade.Above picture Socket
Spring Tension
Place Socket on Spring Tension like this
Slide Socket back as shown in picture
Turn Socket & Spring Tension over Make sure Socket is slide back
This is Call a Blade Guide Make sure the blade Guide is on the Spring Tension
Make sure blade guide is on like picture above, Now place Socket & Spring aside
The comb Blade Place comb blade as picture above
Place cutter blade as picture above, making sure cutter blade smaller blade is on the comb blade Rail.
Hold the blade like this Finger on top and Thumb on the bottom
Turn blade over like this while still holding the blade together
Place screw as shown
Screw in the screw don't tighten leave loose.
Now that you have the 2 screw in and not tight place the blade like this You need to hold the blade with one hand and with your Philips screw driver tap the cutter blade back lightly until the cutter teeth are 2/32 back from the comb blade.
the cutter blade which is the smaller blade is back 2/32 from the comb blade which is the bigger blade. When this is done by holding the blade together with your finger & Thumb
Tighten the 2 screws tight
Your blade should look like this when done correctly
We hope this was helpful when assembling a clipper blade.

It uses oil only to lubricate the chain. The type of oil in not critical although special chain saw oil is available. If you use anything but chain saw blade oil, make sure that it is a light oil, both in viscosity and in colour because it is a total loss system and dark or dirty oil can become very messy. The chain adjustment is on the body at the end of the blade, it actually moves the blade in or out to set the chain tension. The chain should be tensioned that when it is pulled at the bottom, the guides of the chain should not quite come out of the slot in the blade. If the chain is too tight it overheats the blade and stretches the chain.

first releave the tension as you normally would by using a breaker bar and socket and move the serpentine belt aside. Then you remove the center bolt on the pulley itself. Install new pulley and replace the serpentine.