Results 151 to 165 of 174
Thread: Horizontal Bandsaws
-
28th Aug 2020, 09:41 PM #151
-
29th Aug 2020, 12:15 AM #152Most Valued Member
- Join Date
- Nov 2017
- Location
- Geelong, Australia
- Age
- 57
- Posts
- 2,666
I discovered the fixed jaw on the used saw I bought had been welded to the base, so after seeing Kryn post a photo of a mitre guide in another thread I knocked this one up.
Stores nicely in the base of the infeed roller I made at the same time.
Steve
-
30th Aug 2020, 01:36 AM #153Most Valued Member
- Join Date
- May 2011
- Location
- Murray Bridge S Aust.
- Age
- 71
- Posts
- 5,959
Nice one Steve. One thing I forgot to mention, was that I welded a nut (for a length of 12mm rod as a stopper) on the end of the angle piece away from the blade to allow me to cut multiple pieces the same length. As we know cutting multiple pieces of something with an angle on the end isn't always easy!!! I think from memory I used the stop supplied with the saw.
HTH
KrynTo grow old is mandatory, growing up is optional.
-
23rd Mar 2021, 01:22 AM #154Most Valued Member
- Join Date
- May 2011
- Location
- Murray Bridge S Aust.
- Age
- 71
- Posts
- 5,959
Stretching the Capabilities of your Bandsaw
Happened to be looking through You tube, and came across an interesting video of "Stretching the capabilities of your Bandsaw" by none other than our own Michael G.
Thanks Michael I learnt something new today.
https://www.youtube.com/watch?v=zcepTHv78YY
KrynTo grow old is mandatory, growing up is optional.
-
23rd Mar 2021, 07:52 AM #155
A nicely made video.
Well done Michael.
Grahame
-
24th Mar 2021, 09:54 AM #156Diamond Member
- Join Date
- Oct 2011
- Location
- Sydney, NSW
- Posts
- 1,249
Hi,
Nice video. I never thought of using an old candle for lubrication.
Quick question. I recently cut a short length of 63mm OD 12L14 bar stock from a 1 M length. The cut was a good 2 to 3 mm diagonally out. I had the length kind of supported (very sketchy). Cutting fluid was applied manually. I can't remember what speed was used. The bandsaw is a HF 4 x 6".
Anyone care to hazard a guess why it's cut so out?
Ben.
-
24th Mar 2021, 11:48 AM #157
From my my own experience
Wear on one side of the blade.Once this occurs it usually is only corrected by using a new blade and checking/resetting the blade guide.
With a worn blade, no amount of adjustment will return it to cutting perpendicular.
Potentially caused by:
The blade Guide Adjustment.
The blade guide adjustment can be checked by using a small block square set upon the clean bandsaw bed.The bow is placed in the horizontal position and the check made between the base and vertical edge of the blade.
I use a very small 50mm blade model and it is snugged up against the vertical edge of the blade. Because of the set of the teeth there is a small offset which should present a tiny parallel light gap.A small torch helps to see this.
The blade guides ( top and bottom and inner and outer) are adjusted by manipulating the torsion of the blade to a true perpendicular to the band saw bed.
Best done with the brand new blade which should ALWAYS be run in. This is a specific process. Most suppliers suppliers provide details on how to.
Checking and keeping the guides aligned will allow a long life from the blade.
Using the 3 and 10 tooth rule (see Michael's video) , the correct tooth count should be used, as not doing this is a very quick way of damaging the blade.
I hope this description is reasonably easy to follow.
squaring blades.jpg
Grahame
-
24th Mar 2021, 01:33 PM #158Most Valued Member
- Join Date
- Jun 2007
- Location
- sydney ( st marys )
- Age
- 64
- Posts
- 4,890
Not sure with your explanation of how you cut this but it could be that the material was not supported sufficiently and has kicked, 1 mtr of 63 has a reasonable weight to it, it could be a blunt blade, the down feed may of been to rapid, a build up of chips on the blade, once the blade tracks off square it won't really matter what you do, it generally just follows the angle.
-
24th Mar 2021, 06:22 PM #159
Hi Ben, Guys,
I had that kind of problem with a 1 meter length of 35 mm steel bar. I clamped it in the vise without any tail support and over the course of the cut the slight vibration caused it to droop. I've learnt to support any longish lengths of material now.
Normally I can cut within a few thou of square, but the vise back plate and blade guides do need to be properly set, and it is an iterative process. You do need to go around several times to get it right.Best Regards:
Baron J.
-
24th Mar 2021, 07:19 PM #160Most Valued Member
- Join Date
- Nov 2007
- Location
- melbourne australia
- Posts
- 3,228
I enjoyed Michael’s video, but do yourself a favour and attach a piece of 10mm plate to each vice jaw to extend them out to just shy of the blade. An M10 bolt threaded into the movable jaw extension on the opposite side to the blade allows you to fine tune the grip of the jaws when gripping short pieces. Easier than faffing around with shims.
Chris
-
24th Mar 2021, 10:20 PM #161Most Valued Member
- Join Date
- Nov 2017
- Location
- Geelong, Australia
- Age
- 57
- Posts
- 2,666
I don’t know if it applies to the smaller saws, but I find that if I have to move the blade guide support arms it really needs to be done with the tension off the blade or it tends to end up out of square.
I also got caught out recently with a dull blade not cutting square. Pity I’d already cut the batch of 50 pieces, but fortunate that the length was non critical so only cost me some time to square them up in the mill to recover.
Rookie mistake and I should know better - it always pays to check squareness and length regularly when cutting batches.
Steve
-
25th Mar 2021, 12:10 AM #162
Hi Chris,
27-09-2019-007.jpg
That is exactly what I did ! I used 6 mm plate and an M8 100 mm long screw.Best Regards:
Baron J.
-
25th Mar 2021, 05:54 AM #163Most Valued Member
- Join Date
- Aug 2011
- Location
- Melbourne
- Posts
- 4,779
+1 for Michael's video. A swivel head is so much more usable than a swivel jaw. The old Heska has a swivel jaw and it's a PITA.
But, she performs well and for her age does a great job!
Simon
Sent from my SM-G970F using TapatalkGirl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.
-
25th Mar 2021, 08:55 AM #164Most Valued Member
- Join Date
- Nov 2007
- Location
- melbourne australia
- Posts
- 3,228
-
25th Mar 2021, 10:39 AM #165Most Valued Member
- Join Date
- Jul 2006
- Location
- Athelstone, SA 5076
- Posts
- 4,258
Good vid MG
I do what Michael does ..packers or shims etc.....putting bolt in for end of jaw is one of the roundtuit jobs....lol
Similar Threads
-
Power Hacksaws V's Bandsaws
By simonl in forum METALWORK GENERALReplies: 342Last Post: 9th Jun 2019, 09:18 PM -
Metal Bandsaws.
By wm460 in forum METALWORK GENERALReplies: 28Last Post: 8th Jul 2015, 10:23 PM -
thoughts on bandsaws
By texx in forum METALWORK GENERALReplies: 13Last Post: 5th May 2015, 02:33 PM -
Something to check for on small bandsaws
By Michael G in forum METALWORK GENERALReplies: 16Last Post: 25th Dec 2013, 06:06 PM -
Metal Cutting Bandsaws
By silash77 in forum METALWORK GENERALReplies: 15Last Post: 7th Jun 2009, 02:55 PM