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Post by lyled1117 on Nov 24, 2014 13:15:10 GMT -5
Kind of an odd question, see if I can explain it properly. I want to change the bend of a detail in a plastic part probably molded in celcon. It is the cable that exits the speed recorder as modeled by Atlas in their HO SD24 (and possibly other models). The cable on that model exits the recorder housing to the right and curves upward. I'd like to have a part (several actually) for a different model that exits to the left and curls upward. In other words I need to curl the cable in the opposite direction as manufactured. I have tried to use heat to soften the part, but have failed in all attempts. The cable is slender and easily breaks away from the part if too much heat is applied. If I fail at this, I will use a DW counterpart, it's just kind'a frustrating to have a part this tantalizingly close to being a drop in and use item. Or .... did Atlas make the part I desire on a model that I haven't discovered? It wouldn't have to be Atlas of course, but their part is nicely done.
Lyle
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Post by m a y o r 79 on Nov 25, 2014 12:59:24 GMT -5
isn't that the same stuff they make handrails out of? I don't think it reshapes very easily. I've tried to correct bends/warping in handrails before and no amount of heat seems to be enough without damaging the part. I think you're stuck with how it was manufactured.
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Post by PVRR 2647 on Nov 25, 2014 19:38:25 GMT -5
Lyle~
Trying to reshape types of polymers known as polyoxymethylene is next to impossible due to its composition. Celcon, Delrin, Polyacetal, or Acetal are just trade names for the same stuff.
The Detail Associates p/n is 2807 "Speed Recorder with Adapter Flange 4/$1.75"
Last night I broke the little protrusion off the speed recorder of my last one (Murphy's Law), but I was able to drill out the "elbow" that sticks out with a #80 drill bit and insert a piece of .010 brass wire and secure it with a little CA and some kicker. After painting it silver you can't tell the difference. Hope this helps.
Regards,
PVRR2647
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Post by lyled1117 on Nov 25, 2014 20:32:56 GMT -5
isn't that the same stuff they make handrails out of? I don't think it reshapes very easily. I've tried to correct bends/warping in handrails before and no amount of heat seems to be enough without damaging the part. I think you're stuck with how it was manufactured. It is the same material. I have had no success past or present in trying to reshape it, I was hoping someone here may have found the magical mystical process to do so  Lyle~
Trying to reshape types of polymers known as polyoxymethylene is next to impossible due to its composition. Celcon, Delrin, Polyacetal, or Acetal are just trade names for the same stuff.
The Detail Associates p/n is 2807 "Speed Recorder with Adapter Flange 4/$1.75"
Last night I broke the little protrusion off the speed recorder of my last one (Murphy's Law), but I was able to drill out the "elbow" that sticks out with a #80 drill bit and insert a piece of .010 brass wire and secure it with a little CA and some kicker. After painting it silver you can't tell the difference. Hope this helps.
Regards,
PVRR2647
I've used the DW speed recorders and wheel slip detectors to good effect, I was simply hoping to come up with what I thought might be a more durable part in plastic. I've had similar luck like you in having these break, not often but it does happen. Lyle |
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Post by PVRR 2647 on Nov 25, 2014 21:47:07 GMT -5
Lyle~
The Detail Associates part 2807 is made of the engineering plastic aforementioned in my last post. I have found it to be as durable as a small part can be.
The Details West part SR-284/285 is made of "white" metal. I have never used these particular parts, but have used a lot of their "white" metal castings with mixed results such as you've described.
PVRR2647
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