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#1
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Access ports in s/s water tanks - best way?
Check out http://www.seabuilt.com/noflash.html. They make great access
plates. Even if you don't want to buy you will get some good ideas. Douglas |
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#2
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Access ports in s/s water tanks - best way?
WOW!!! $120 for a 6" aluminum plate, 8 bolts and a ring that I could
turn out in 10 minutes with $8 worth of material. I need to stop selling anchors and spend more time in the shop! Douglas Nikkila wrote: Check out http://www.seabuilt.com/noflash.html. They make great access plates. Even if you don't want to buy you will get some good ideas. Douglas -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
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#3
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Access ports in s/s water tanks - best way?
WOW doesn't do it. I saw one this afternoon at a marine jewellery
store - highway robbery of stupid people. On Mon, 22 Mar 2004 21:55:39 -0500, Glenn Ashmore wrote: WOW!!! $120 for a 6" aluminum plate, 8 bolts and a ring that I could turn out in 10 minutes with $8 worth of material. I need to stop selling anchors and spend more time in the shop! Douglas Nikkila wrote: Check out http://www.seabuilt.com/noflash.html. They make great access plates. Even if you don't want to buy you will get some good ideas. Douglas |
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#4
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Access ports in s/s water tanks - best way?
"Glenn Ashmore"writes: WOW!!! $120 for a 6" aluminum plate, 8 bolts and a ring that I could turn out in 10 minutes with $8 worth of material. I need to stop selling anchors and spend more time in the shop! You obviously have never been involved in private label women's cosmetics. Lew |
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#5
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Access ports in s/s water tanks - best way?
While $120 maybe a lot for this, it's not out of line. I've been
fabricating for most of my life and I'm here to state that NOTHING like this can be built in 10 minutes as a "one off". Even if you have the tooling to punch out the metal and all of the materials at hand it can't be done in 10 minutes. I have a very well equipped welding/machine shop and if a customer walked in the door right this second and ordered one of these, I'd estimated at least 2 hours to gather materials, layout and plasma cut, punch holes, tack weld bolts and make a gasket. And if I don't have the right metal, bolts, gasket material, etc. on hand then add the time for a trip to pick them up. If I plan to make 50 of these then it's a different story, but then I have to stock them and suffer the loss of use of that money that is tied up in materials and labor until they are sold. The true cost of building anything is far more than the cost of the material. I have a heap of money in machinery, shop building, utilities, etc. that have to added to the cost of everything that I sell. Otherwise, I just lose money. I would charge at least the same amount to make one of these. When someone says to me, "it will only take you 10 minutes to do that" (and I've heard that often)...I say, "There's the shop. If you can make it in 10 minutes it's free, otherwise you pay me double shop rate" Quinton "Glenn Ashmore" wrote in message news:sNN7c.132$pM.28@lakeread04... WOW!!! $120 for a 6" aluminum plate, 8 bolts and a ring that I could turn out in 10 minutes with $8 worth of material. I need to stop selling anchors and spend more time in the shop! Douglas Nikkila wrote: Check out http://www.seabuilt.com/noflash.html. They make great access plates. Even if you don't want to buy you will get some good ideas. Douglas -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
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#6
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Access ports in s/s water tanks - best way?
I should clarify. I would not do just one off either. I machine
stainless dinghy clamps 4 sets at a time because setup time is longer than machining time. I would probably do at least a couple of dozen each 6" and 8" in a run to get a whole day out of the setup. With well planned use of the drop I could still keep the material cost under about $6 for a 6" and maybe $8 for an 8" using McMaster prices for 5056 aluminum, 1/4-20 stainless bolts and adhesive backed Neoprene gasket sheet. If bought in production quantities it would be a lot less. These are not a complex machining job and aluminum is a lot easier to machine than the 316 that I work with and there is no polishing to deal with. You would need two jigs, a drill press and a mill. My shop is not very sophisticated but assuming $60/hour: once the jigs are setup, one man running manual machines could crank out at least 6 an hour so the total fabrication cost might average $16 to $18 each. Allowing 4X markup for overhead, profit, distribution and marketing they should be able to retail them for about $60 to $75 each. But price has little to do with cost so I guess there are enough people out there ready to pay "marine" prices. QLW wrote: While $120 maybe a lot for this, it's not out of line. I've been fabricating for most of my life and I'm here to state that NOTHING like this can be built in 10 minutes as a "one off". Even if you have the tooling to punch out the metal and all of the materials at hand it can't be done in 10 minutes. I have a very well equipped welding/machine shop and if a customer walked in the door right this second and ordered one of these, I'd estimated at least 2 hours to gather materials, layout and plasma cut, punch holes, tack weld bolts and make a gasket. And if I don't have the right metal, bolts, gasket material, etc. on hand then add the time for a trip to pick them up. If I plan to make 50 of these then it's a different story, but then I have to stock them and suffer the loss of use of that money that is tied up in materials and labor until they are sold. The true cost of building anything is far more than the cost of the material. I have a heap of money in machinery, shop building, utilities, etc. that have to added to the cost of everything that I sell. Otherwise, I just lose money. I would charge at least the same amount to make one of these. When someone says to me, "it will only take you 10 minutes to do that" (and I've heard that often)...I say, "There's the shop. If you can make it in 10 minutes it's free, otherwise you pay me double shop rate" Quinton "Glenn Ashmore" wrote in message news:sNN7c.132$pM.28@lakeread04... WOW!!! $120 for a 6" aluminum plate, 8 bolts and a ring that I could turn out in 10 minutes with $8 worth of material. I need to stop selling anchors and spend more time in the shop! Douglas Nikkila wrote: Check out http://www.seabuilt.com/noflash.html. They make great access plates. Even if you don't want to buy you will get some good ideas. Douglas -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
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#7
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Access ports in s/s water tanks - best way?
Would you sell them for this mark up of 4 times? Or is that what the guy
selling them for you is asking? If the retailer marks up your price of $60 to $75 2 times(not an uncommon markup) you get a price of $120 to $150. "Glenn Ashmore" wrote in message news:syY7c.242$pM.89@lakeread04... I should clarify. I would not do just one off either. I machine stainless dinghy clamps 4 sets at a time because setup time is longer than machining time. I would probably do at least a couple of dozen each 6" and 8" in a run to get a whole day out of the setup. With well planned use of the drop I could still keep the material cost under about $6 for a 6" and maybe $8 for an 8" using McMaster prices for 5056 aluminum, 1/4-20 stainless bolts and adhesive backed Neoprene gasket sheet. If bought in production quantities it would be a lot less. These are not a complex machining job and aluminum is a lot easier to machine than the 316 that I work with and there is no polishing to deal with. You would need two jigs, a drill press and a mill. My shop is not very sophisticated but assuming $60/hour: once the jigs are setup, one man running manual machines could crank out at least 6 an hour so the total fabrication cost might average $16 to $18 each. Allowing 4X markup for overhead, profit, distribution and marketing they should be able to retail them for about $60 to $75 each. But price has little to do with cost so I guess there are enough people out there ready to pay "marine" prices. QLW wrote: While $120 maybe a lot for this, it's not out of line. I've been fabricating for most of my life and I'm here to state that NOTHING like this can be built in 10 minutes as a "one off". Even if you have the tooling to punch out the metal and all of the materials at hand it can't be done in 10 minutes. I have a very well equipped welding/machine shop and if a customer walked in the door right this second and ordered one of these, I'd estimated at least 2 hours to gather materials, layout and plasma cut, punch holes, tack weld bolts and make a gasket. And if I don't have the right metal, bolts, gasket material, etc. on hand then add the time for a trip to pick them up. If I plan to make 50 of these then it's a different story, but then I have to stock them and suffer the loss of use of that money that is tied up in materials and labor until they are sold. The true cost of building anything is far more than the cost of the material. I have a heap of money in machinery, shop building, utilities, etc. that have to added to the cost of everything that I sell. Otherwise, I just lose money. I would charge at least the same amount to make one of these. When someone says to me, "it will only take you 10 minutes to do that" (and I've heard that often)...I say, "There's the shop. If you can make it in 10 minutes it's free, otherwise you pay me double shop rate" Quinton "Glenn Ashmore" wrote in message news:sNN7c.132$pM.28@lakeread04... WOW!!! $120 for a 6" aluminum plate, 8 bolts and a ring that I could turn out in 10 minutes with $8 worth of material. I need to stop selling anchors and spend more time in the shop! Douglas Nikkila wrote: Check out http://www.seabuilt.com/noflash.html. They make great access plates. Even if you don't want to buy you will get some good ideas. Douglas -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
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#8
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Access ports in s/s water tanks - best way?
1) Cut an oval hole
2) then make 2 metal pieces larger then the hole for a gasket but small enough so that one can fit into the tank. 3) bolt or machine screw the pieces together with gasket and stainless tank sandwiched between. |
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#9
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Access ports in s/s water tanks - best way?
Glenn, You do DAMN GOOD work too ...why not start a business to compete with SeaBuilt? Maybe you could also add gasket material that works for gasoline too. Upon first look, all I saw at SeaBuilt was diesel, water/gray water/etc, but no gasoline compatible seals. Even if the gasoline-compatible gasket had to use a sealant and be replaced when opening/replacing the cover, it would still make sense to have one. Brian "Glenn Ashmore" wrote in message news:sNN7c.132$pM.28@lakeread04... WOW!!! $120 for a 6" aluminum plate, 8 bolts and a ring that I could turn out in 10 minutes with $8 worth of material. I need to stop selling anchors and spend more time in the shop! Douglas Nikkila wrote: Check out http://www.seabuilt.com/noflash.html. They make great access plates. Even if you don't want to buy you will get some good ideas. Douglas -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
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