Murphy's Law
- Hippety Hop
- Blackwood
- Posts: 175
- Joined: Wed Apr 30, 2008 11:18 am
- Location: Moorabbin
Murphy's Law
Things that go wrong.
Clamped it up like this last night with no glue just to try it out. I was getting a bit tired, so I went to bed and left it. Un-clamped it this morning, then glued and clamped it up exactly the same way, and after a good inspection, left it. A couple of minutes later I looked and it was sagging down toward the bench. I reached out and grabbed it just as it dropped into my hand.
The cork pad on the cam clamp had slipped. That's one of the cam clamps from Timbecon. Should have known. A couple of them cork pads have slipped before, and I've stuck them back with titebond. I'd better do them all. Luckily I didn't do any damage. It most certainly would have bounced off the edge of the bench, and crashed to the floor.
Hip.
Clamped it up like this last night with no glue just to try it out. I was getting a bit tired, so I went to bed and left it. Un-clamped it this morning, then glued and clamped it up exactly the same way, and after a good inspection, left it. A couple of minutes later I looked and it was sagging down toward the bench. I reached out and grabbed it just as it dropped into my hand.
The cork pad on the cam clamp had slipped. That's one of the cam clamps from Timbecon. Should have known. A couple of them cork pads have slipped before, and I've stuck them back with titebond. I'd better do them all. Luckily I didn't do any damage. It most certainly would have bounced off the edge of the bench, and crashed to the floor.
Hip.
[img]http://planetsmilies.net/not-tagged-smiley-10140.gif[/img][img]http://planetsmilies.net/person-smiley-1062.gif[/img]
Hippus Erectus
Hippus Erectus
-
- Blackwood
- Posts: 311
- Joined: Sun Jan 13, 2008 10:22 am
- Location: Santa Cruz, Ca.
- Contact:
I would highly recommend gluing up on a workboard at least; easier yet is to put the body in a mold and glue up the top and then the back in a go-bar deck. Asking a clamp to do double duty...suspend the instrument AND be part of the top to sides glue up is sending out a big invite to our pal Murphy. That's a lot of weight to be hanging off of a cam clamp. If I were the cork, I'd have slipped too.
Rick Turner
Guitar Maker, Experimenter, Diviner
www.renaissanceguitars.com
www.d-tar.com
Guitar Maker, Experimenter, Diviner
www.renaissanceguitars.com
www.d-tar.com
I am with Rick, use a work board.
The affect of all that weight focused at just one point during glue up is just asking for trouble. It is not just the fact that the cork could slip as it did or that clamp held in the vice could otherwise fail leading to the whole lot falling to the ground, but my concern is that all that weight hanging from one point creates a cantilever affect loading tension into the sides that will eventually transfer into the back or top once the glue dries.
This may not seem too much of an issue upon first thoughts, but why invite anything into the process that has the potential to lead to problems down the track.
Cheers
Kim
The affect of all that weight focused at just one point during glue up is just asking for trouble. It is not just the fact that the cork could slip as it did or that clamp held in the vice could otherwise fail leading to the whole lot falling to the ground, but my concern is that all that weight hanging from one point creates a cantilever affect loading tension into the sides that will eventually transfer into the back or top once the glue dries.
This may not seem too much of an issue upon first thoughts, but why invite anything into the process that has the potential to lead to problems down the track.
Cheers
Kim
- DarwinStrings
- Blackwood
- Posts: 1877
- Joined: Thu Nov 13, 2008 10:27 pm
- Location: Darwin
Yes indeed, nice catch Hip Sorry if I came across a bit blunt in my earlier reply, I was in a hurry tis all.
Anyhow here's safe-T-tip No73 from Kim's school of sharp things and beer. Always try to maintain the saw dust and shavings at least ankle deep on the shop floor while you work. Doing so is not only very comfortable under your bare feet, it will ensure a soft landing for both you and your work piece every time you fall over.
As an added bonus, the shavings also double as a comfy mattress when ever the missus won't let you back in the house for being an idiot
Cheers
Kim
Anyhow here's safe-T-tip No73 from Kim's school of sharp things and beer. Always try to maintain the saw dust and shavings at least ankle deep on the shop floor while you work. Doing so is not only very comfortable under your bare feet, it will ensure a soft landing for both you and your work piece every time you fall over.
As an added bonus, the shavings also double as a comfy mattress when ever the missus won't let you back in the house for being an idiot
Cheers
Kim
Kim my friend if I had that much dirt in my shop I would stroke out.....Kim wrote:Yes indeed, nice catch Hip Sorry if I came across a bit blunt in my earlier reply, I was in a hurry tis all.
Anyhow here's safe-T-tip No73 from Kim's school of sharp things and beer. Always try to maintain the saw dust and shavings at least ankle deep on the shop floor while you work. Doing so is not only very comfortable under your bare feet, it will ensure a soft landing for both you and your work piece every time you fall over.
As an added bonus, the shavings also double as a comfy mattress when ever the missus won't let you back in the house for being an idiot
Cheers
Kim
-
- Blackwood
- Posts: 311
- Joined: Sun Jan 13, 2008 10:22 am
- Location: Santa Cruz, Ca.
- Contact:
I've seen shops where the chips and sawdust were literally above ankle deep...one was a tiny subcontracting shop about 30 miles outside of Pusan, Korea in which there was a large pin router, a dangling 60 Watt light bulb, and a guy cranking out bodies for electric guitars that would eventually have little loudspeakers and amplifiers built in. The other shop was a hole in the wall...almost literally, in Santo Domingo, Dominican Republic. It was in the lumber yard district, and there was one guy and a lathe, and he was knee deep in shavings. He was making turned spindles...balusters...for railings, and he was duplicating a pattern by eye and doing pretty amazing work. I got the impression that he wouldn't bother sweeping the shavings out until they got up to the level of his lathe tool rest!
Rick Turner
Guitar Maker, Experimenter, Diviner
www.renaissanceguitars.com
www.d-tar.com
Guitar Maker, Experimenter, Diviner
www.renaissanceguitars.com
www.d-tar.com
- sebastiaan56
- Blackwood
- Posts: 1279
- Joined: Sun Oct 28, 2007 5:23 am
- Location: Blue Mountains
- Hippety Hop
- Blackwood
- Posts: 175
- Joined: Wed Apr 30, 2008 11:18 am
- Location: Moorabbin
I'll be buggered...
Just spent at least an hour sweating outside in the sun with the mask and apron on, and then just on the last little bit and the glue gave way.
Just spent at least an hour sweating outside in the sun with the mask and apron on, and then just on the last little bit and the glue gave way.
[img]http://planetsmilies.net/not-tagged-smiley-10140.gif[/img][img]http://planetsmilies.net/person-smiley-1062.gif[/img]
Hippus Erectus
Hippus Erectus
- DarwinStrings
- Blackwood
- Posts: 1877
- Joined: Thu Nov 13, 2008 10:27 pm
- Location: Darwin
- Hippety Hop
- Blackwood
- Posts: 175
- Joined: Wed Apr 30, 2008 11:18 am
- Location: Moorabbin
Jim, the plastic binding strip virtually fell off. The end bit flipped up as I was sanding it, so then I hooked my finger under it and it peeled off far too easy for my liking.
I got another strip and scratched one side of it with a saw blade. Should grip better this time.
Hip.
I got another strip and scratched one side of it with a saw blade. Should grip better this time.
Hip.
[img]http://planetsmilies.net/not-tagged-smiley-10140.gif[/img][img]http://planetsmilies.net/person-smiley-1062.gif[/img]
Hippus Erectus
Hippus Erectus
- DarwinStrings
- Blackwood
- Posts: 1877
- Joined: Thu Nov 13, 2008 10:27 pm
- Location: Darwin
- Hippety Hop
- Blackwood
- Posts: 175
- Joined: Wed Apr 30, 2008 11:18 am
- Location: Moorabbin
Titebond alright? I hope so - I've used it again...
Looks exactly the same as before. I think the plastic was just too smooth so the glue couldn't grip.
Just bought this thing to help clean it up. It should arrive just after the binding on the back is dry.
Oh yeah, the top is Tim's streaky myrtle, and the rope purfling is Tim's as well. The back and sides are zebra wood from RC. Both the rope and the zebra are mongrels to bend.
Cheers Hip.
Looks exactly the same as before. I think the plastic was just too smooth so the glue couldn't grip.
Just bought this thing to help clean it up. It should arrive just after the binding on the back is dry.
Oh yeah, the top is Tim's streaky myrtle, and the rope purfling is Tim's as well. The back and sides are zebra wood from RC. Both the rope and the zebra are mongrels to bend.
Cheers Hip.
[img]http://planetsmilies.net/not-tagged-smiley-10140.gif[/img][img]http://planetsmilies.net/person-smiley-1062.gif[/img]
Hippus Erectus
Hippus Erectus
Hey Hip dont let that belt sander anywhere near that uke. Cabinet scrapers and/or sandpaper on a block are the go.
Titebond is for wood....its not going to work to well with plastic. I think a solvent based glue is the go....dont know what other people use as I dont let any plastic bindings near my babies.
Titebond is for wood....its not going to work to well with plastic. I think a solvent based glue is the go....dont know what other people use as I dont let any plastic bindings near my babies.
- Hippety Hop
- Blackwood
- Posts: 175
- Joined: Wed Apr 30, 2008 11:18 am
- Location: Moorabbin
- DarwinStrings
- Blackwood
- Posts: 1877
- Joined: Thu Nov 13, 2008 10:27 pm
- Location: Darwin
I'm with Martin Hip check this thread out it has some suggestions http://www.mcguitars.com.au/forum/viewtopic.php?t=1286
Jim
Jim
- Hippety Hop
- Blackwood
- Posts: 175
- Joined: Wed Apr 30, 2008 11:18 am
- Location: Moorabbin
I was tempted to try the "Great Planes" 6 minute epoxy on the back, but I had a good pick at the ends of the top binding with my pocket knife and it seems firm enough now, so I glued the back binding on the same way.
Now my rhubarb & apple crumble smells like it's ready.
Cheers Hip.
Now my rhubarb & apple crumble smells like it's ready.
Cheers Hip.
[img]http://planetsmilies.net/not-tagged-smiley-10140.gif[/img][img]http://planetsmilies.net/person-smiley-1062.gif[/img]
Hippus Erectus
Hippus Erectus
- Nick
- Blackwood
- Posts: 3642
- Joined: Thu Feb 26, 2009 11:20 am
- Location: Christchurch, New Zealand
- Contact:
Glad the Titebond seems to have worked. I usually get acrylic glue from a plastics supplier, it works by melting the surface layer of the plastic and soaks into the wood thereby keying the two together. I'm with Martin, level using only scrapers, anything else generates too much heat and I think you'll find the binding pops off again.
Nice crumble by the way
Nice crumble by the way
"Jesus Loves You."
Nice to hear in church but not in a Mexican prison.
Nice to hear in church but not in a Mexican prison.
Hey Hip......that belt sanders a GMC? I doubt youd get the skin off a milk custard with that piece of rubbish. Flog it and use the money to buy yourself a set of decent cabinet scrapers and some garnet paper.Hippety Hop wrote:I'll be gentle.
Perhaps I was a bit hasty. Oh well - just another cheap power tool to throw on the pile.
Suppose I can use it on my eczema.
*****ng nice looking pie
Who is online
Users browsing this forum: Google and 16 guests