Needs Pictures: 0
Results 1 to 15 of 20
Thread: Twin screw vice
-
4th November 2018, 05:17 PM #1GOLD MEMBER
- Join Date
- Feb 2015
- Location
- Strathalbyn South Australia
- Posts
- 1,141
Twin screw vice
Just finished a twin screw vice for my bench. 560mm between screws and 1020mm total length x 150mm high. I built it out of quatersawn claret ash as it was what I had. I have had the screws for more than six months so it was well overdue. I will mainly be using it in building guitars and ukuleles.
-
4th November 2018 05:17 PM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
5th November 2018, 09:59 PM #2SENIOR MEMBER
- Join Date
- Jul 2004
- Location
- Adelaide
- Age
- 76
- Posts
- 768
Looks good Cal, do you have any problem in keeping the jaws parallel to each other?
Regards
Keith
-
5th November 2018, 10:08 PM #3GOLD MEMBER
- Join Date
- Feb 2015
- Location
- Strathalbyn South Australia
- Posts
- 1,141
Just have to make sure I wind them at the same rate otherwise they bind, I have seen somewhere that there are gear and chain linked screws, that would make life easier!
-
5th November 2018, 10:29 PM #4.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,791
Looks good!
Do you plan to line them with anything?
I lined my vice faces with rawhide leather and as well as protecting the timber being gripped the faces grip like there's no tomorrow with the lightest pressure.
-
5th November 2018, 10:47 PM #5GOLD MEMBER
- Join Date
- Feb 2015
- Location
- Strathalbyn South Australia
- Posts
- 1,141
The thought had crossed my mind Bob, I was thinking about even having another pair of soft jaws that would somehow fit into them. The hide sounds good too, I wonder how cork would go? It probably wouldn’t hold up as well as the hide.
-
5th November 2018, 10:59 PM #6SENIOR MEMBER
- Join Date
- Jul 2004
- Location
- Adelaide
- Age
- 76
- Posts
- 768
A couple of sprockets and some chain would be good, although not sure how easy they would be to fit.
Regarding the soft jaws, Bob's suggestion of leather is the way to go.
Regards
Keith
-
6th November 2018, 12:24 AM #7
You guys might be interested in this guys prototypes: https://www.instagram.com/aklein2303/
It uses a gearing mechanism, that can be pulled or pushed to change the ratio. He is moving into production.
This is a video showing how the vice works in low/high gearing....https://www.instagram.com/p/BoQuglynOKJ/
Apologies to hijack the thread.
aklein2303_6_11_2018_0_20_21_830.jpg
(can we PLEASE update the forum to make videos insertable?)
-
6th November 2018, 09:30 AM #8.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,791
My hides ones are 12 years old now and still OK despite plenty of abuse holding metal and rough saw timber. I use them a holt to hold threaded Al/brass pipe and rod because the leather doesn't damage the threads. As a result mine a tad dirty so that would be about the only reason for changing the leather.
-
6th November 2018, 11:37 AM #9GOLD MEMBER
- Join Date
- Jun 2005
- Location
- Helensburgh
- Posts
- 7,696
That's a hard way to do multiple speeds, two sprockets of unequal size and wind the handle of choice would be easier, perhaps not as greater difference though. As for novel vices, look mum, no front handles to wind.....
https://sawmillcreek.org/showthread....81-Custom-ViseCHRIS
-
6th November 2018, 03:22 PM #10GOLD MEMBER
- Join Date
- Feb 2015
- Location
- Strathalbyn South Australia
- Posts
- 1,141
Wow, bit of effort went into that design. Happy with my cheap and nasty, it will do the job I need it to.
Thanks also to Bob, I will have to see where I can get some hide from, the last bit I had is hanging on the shed..... All together now! Tie me kangaroo down sport.....Oh, probably not politically correct to start singing that these days [emoji848]
-
14th November 2018, 08:48 AM #11
Bit late chipping in here, but a couple of comments.
First, you probably won't find the separate screws a huge handicap once you get used to them, unless you are constantly moving between parts of widely-varying thickness. using the 'fixed' metal screws like yours has the advantage of moving the jaw both in and out as they are turned, though this has the disadvantage in not allowing them to get too far off-square. The (wooden) screws on my twin-screw are fitted through a 'loose' hole in the vise jaw, which solves the binding problem, but means the jaw doesn't come with it when the screw is wound out.
Twin-screw vise.jpg
There is enough clearance in the holes in the front jaw to allow tightening at a small but useful angle to the rear jaw - handy for holding off-parallel pieces. When switching between pieces of equal thickness, such as when dovetailing drawer sides, loosening one screw is sufficient.
Swings & roundabouts, I think you adapt to it pretty quickly either way.
I tried using cork lining for jaws, once, and it didn't last long at all. Leather is far more durable, I've gotten 15 years or more out of leather liners, & like Bob, I consider the leather sacrificial, so it doesn't get molly-coddled.
Good leather isn't cheap, & not as easy to get as it used to be, so for large jaws like the twin-screw vice, I use thin pieces of a soft wood like Camphor-laurel, screwed to the inner faces. They give almost as good 'grip' as leather, and are easily replaced when necessary, unlike the leather liners, which are glued on with PVA and take a good deal more to remove & replace.
Cheers,IW
-
14th November 2018, 08:54 AM #12GOLD MEMBER
- Join Date
- Feb 2015
- Location
- Strathalbyn South Australia
- Posts
- 1,141
Thanks Ian, I contacted a leather supplier and was quoted $105 for a hide (no part hides sold) he calculated that it would be enough for 5 pair. That would last longer than me from your information and Bob’s.
I have a fair stash of Silky oak but it may be a little waxy for the job.
Will see what else I can find.
-
14th November 2018, 10:18 AM #13.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,791
I bought my leather pieces from a leather bikie jacket/belt supply/repair shop and I got enough pieces for ~$35 to cover both sides of 3 vices plus has a fair bit left over for other projects. The gentleman serving me at the shop was covered in tatts, had more studs through various body parts than his lather jacket, but was very friendly and helpful and let me rummage through his offcuts bin to get what I wanted. BTW it does not have to be raw or in one piece, even coloured pieces would be fine so If you can find an old damaged leather coat that could contain more than enough leather for your purposes.
If you have the readies then $105 for a whole hide is pretty cheap because leather has heaps of uses in a WW shop. Some of the other projects/ways I have used leather for include; Mallet heads, soft jaws for my MW, lathe and DP vices, and axe/hatchet head and draw knife bade covers. Maybe you could split a whole hide with some other members.
leather.jpg
cover.jpg
allwithcover.jpg
-
14th November 2018, 11:43 AM #14
Cal
Just on sources of leather and because you don't necessarily need a single piece, you maybe able to salvage from other places other than old jackets. Ladies high boots could be a possibility. I keep old work boots for a similar purpose, but they are a little small for a vice like yours. I used an old welders apron for my vices.
However, I concede that a single piece of new leather is more appealing if the budget will stretch to such things.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
-
14th November 2018, 12:16 PM #15.
- Join Date
- Feb 2006
- Location
- Perth
- Posts
- 27,791
Leather from a welders aprons would be great.
SWMBO uses leather chaps for horse riding and the various elastics and buckles etc wear out after about 2 years so I get to use the leather from those for various projects. The last thing I made from one of these was gasket for the motor side of the DC impeller. My son even made wallet out of one of them.
I just checked out ebay and there are quite a few selling leather offcuts for a range of prices.
eg
https://www.ebay.com.au/itm/3-x-Blac...YAAOSw6iFbLY~Q
Similar Threads
-
Twin Screw Vice Fitting?
By Scally in forum THE WORK BENCHReplies: 19Last Post: 24th August 2009, 11:20 PM -
Twin or Single screw
By honkongphoie in forum BOAT BUILDING / REPAIRINGReplies: 8Last Post: 18th June 2009, 05:34 PM -
Those with a LV twin-screw vise.....
By TassieKiwi in forum HAND TOOLS - UNPOWEREDReplies: 5Last Post: 15th February 2007, 11:11 AM -
Twin Screw bench vice
By Shedhand in forum HOMEMADE TOOLS AND JIGS ETC.Replies: 2Last Post: 29th April 2006, 08:15 PM -
VERITAS twin screw tail vice
By steve 54 in forum WOODWORK - GENERALReplies: 5Last Post: 25th October 2004, 10:53 PM