Thread: scroll chuck help

I would suggest you take all four off, turn them upside down and check where the slot is for the scroll. Each will have a slightly different position from one end. Align them up from closest to the centre of the chuck to furthest from the centre of the chuck.

Then they will be lined up as 1 through to 4 or 4 through to 1; you'll soon find out.

Mick.

i tried that for 2 hrs today!

You're sure there's no numbers?

Have another look at the slides, checking all over them. If numbers aren't stamped, there are often groups of punch-marks from a drift instead. Or 'scrape-marks' or similar.

They may not be visible when the chuck is assembled, but there's usually something to help whoever is assembling the chuck in the factory!

Hi Chris, have you cleaned the chuck thoughly , could be
some dirt or grit inside ? Also they should have a mark or number
On the sliders?...
There Is a very good video on how to clean and dissmantle chucks
In the videos on this site !

take them all out
turn them upside down and take a piccy. we may be able to work out the order from that.
also a piccy of the scroll bit may help

cheers

under a jewellers loop I can just see numbers on there side, 1, 1, 2, 4. Two number 1 and no number 3. Frig they are small. Still can't get em to fit. I'll take a pic.

It's likely that one of the 1's is a badly stamped #3. (One of my Supernovas is like that!)

On my chucks (Teknatools, and a couple of chaiwanese knock-offs) the jaws go 1 to 4 in a clockwise direction when looking at the jaw side of the chuck and the scroll also spirals outwards from the centre in a clockwise fashion. However, I have seen a couple of odd cheap chucks that spiral the other way, even though the jaws are still numbered clockwise.

So, this is my normal routine for assembly for a clockwise spiral.

Wind the scroll so that the start of the thread is visible in one of the slide slots. Insert one of the 1's and wind the scroll so that the start is in the next clockwise position. Insert slide 2. Wind the scroll to the next clockwise position and insert the other '1'. If these 3 slides appear level, repeat to install the 4, wind all the way closed... and fit the little grub screw that should've stopped the jaws from winding all the way out in the first place! (There is usually a little tapped hole near the outside edge of the chuck body in of the slide slots for this. If there never was one one, well... I'd drill & tap and fit one to save future headaches!)

If NOT level, wind anticlockwise to remove the inserts and repeat the process, swapping the positions of the two 1s.


If the scroll winds t'other way, then insert slide 4 first, wind anti-clockwise, insert 3 (well... one of the 1's anyway), wind anticlockwise... working down to 1.

(Apologies if I'm labouring the obvious and you've tried all this. But there are others who've had similar problems and may find this info useful.)

No 1 will (should) have the smallest bit of tooth on the inside ie the bit that is taken up by the scroll first

The chuck has numbers stamped on the face so I can't see why the slides wouldn't have distinctive numbers stamped on them.

Originally Posted by Treecycle

The chuck has numbers stamped on the face so I can't see why the slides wouldn't have distinctive numbers stamped on them.

yes that is just plain bizarre. maybe those numbers are for the jaws and they never thought some idiot would pop the sliders out!
got some good tips there though guys, will attack it again tonight.

couldn't resist, just had a crack, got it! the least teeth in first. thanks heaps everyone. the economy scroll chuck is operational once again

Do you have something to engrave or number the sliders with in case they accidentally jump out again? Even just a centre punch to put 1 to 4 dimples in the end would do to match the numbers on the face.

Originally Posted by brainstrust

I got this economy scroll chuck!!! I scrolled it out too much and the black jaws holder things popped out. Now for the life of me I can't get them back in allequal. I know they are each slightly different but they don't have any numbers on them. Anyone know the order to put them back in

Wind them out further and you can do some offset turning.