Trident Mk. II Build Log
Yeah yeah, I'm cycling it from the sun to the shade. With this weather, a solar oven is starting to look like a good idea...
Build log, I revive you!
Back home for the summer, parts have been ordered. I found an old NPT spark plug on ebay and ordered adapters to attach it to the chamber. Parts will arrive by June 3<sup>rd</sup> at latest.
I'm also going to scrap the current piston in favor of an Fnord-based design, which I hope will be posted soon. There may be issues with o-ring blowoff, which seems to be the only drawback.
Just a quick question, if anyone knows: Do I require a TiN-coated bit to drill through SS, or will one of these cut it?
Back home for the summer, parts have been ordered. I found an old NPT spark plug on ebay and ordered adapters to attach it to the chamber. Parts will arrive by June 3<sup>rd</sup> at latest.
I'm also going to scrap the current piston in favor of an Fnord-based design, which I hope will be posted soon. There may be issues with o-ring blowoff, which seems to be the only drawback.
Just a quick question, if anyone knows: Do I require a TiN-coated bit to drill through SS, or will one of these cut it?
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Labtecpower
- Sergeant 3
- Posts: 1297
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You can drill into SS with a standard HSS bit, just lower the cutting speed in order to keep your drill cool enough. Using cutting fluid is also a good idea.
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Crna Legija
- First Sergeant 2
- Posts: 2333
- Joined: Sun Jul 20, 2008 5:14 am
- Location: australia
yeah HSS is fine some Trefolex makes it heaps easier.
'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
--Homer Simpson
Add me on ps3: wannafuk, 8/11/11 cant wait
But spending the extra $40 and buying a set of cobalt bits is so worth it. I wouldn't buy HSS bits again unless I was flat broke.
I don't have a set of cobalt bits, just a couple, and when I'm not broke, I'll buy a full metric set.
And good to see you back Saefroch.
I don't have a set of cobalt bits, just a couple, and when I'm not broke, I'll buy a full metric set.
And good to see you back Saefroch.
/sarcasm, /hyperbole
I have a set of standard english sized TiN coated bits, the one I'm buying might be a one-time use, being such an exotic size.
Thanks for the welcome back!
Thanks for the welcome back!
Update!
Now at college, with access to a machine shop. I've worked out and got parts for a fueling rig and a pressurized pilot system. Now I'm just having an inner debate... For the end of the piston that has a diameter just slightly less than 0.5... Do I machine my own seal or stretch an undersized o-ring?
Now at college, with access to a machine shop. I've worked out and got parts for a fueling rig and a pressurized pilot system. Now I'm just having an inner debate... For the end of the piston that has a diameter just slightly less than 0.5... Do I machine my own seal or stretch an undersized o-ring?
Day 1 of machining done, pump cylinder reamed to 3/8", and pump rod almost to exact size (~0.002" left on it).
Tomorrow should see a finished small high-pressure pump.
Tomorrow should see a finished small high-pressure pump.
Day 2 of machining, good progress. New pump completed, 3/8" diameter head, 12" stroke:
Sorry for the terrible picture quality, all I have at school is my cell phone. The weld is not mine.
I've also discovered that if I ask nicely, the school will pay for my raw materials. The machinist here is ordering a piece of steel for me to machine a new valve body. No epoxy this time.
Sorry for the terrible picture quality, all I have at school is my cell phone. The weld is not mine.
I've also discovered that if I ask nicely, the school will pay for my raw materials. The machinist here is ordering a piece of steel for me to machine a new valve body. No epoxy this time.