Investment Casting or lost wax casting demonstrated
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- čas přidán 25. 04. 2017
- This video on Investment or lost wax casting covers making a mold of a pattern , wax injection, treeing the waxes, investing the waxes, pouring the metal,and removing the castings from the tree.
Inlay techniques for the woodworkers, jewelers or hobbyist are discussed
hamlertools.smugmug.com/
By Paul Hamler
What a awesome video, I’m 35 and you remind me of my grandfather , I want to thank you for sharing your knowledge and informing the next generations of true craftsmanship, I hope to be as half as good as you one day!
First of all, thank you for the video. Even though I have been doing castings for over 50 years, I learned something from your video. You can teach an old dog something new.
WOW. Didn't realize how much work went into that process.
Thanks for sharing. Gives me a whole new respect for that type of work.
I am personally very grateful to you Paul for doing this channel. I am sure that many others will feel the same way. I have seen many many people who do a youtube channel that is spurious and has no real merit be successful and don't understand it. I will wait with eagerness for every video you release and hope that we can do this for years to come. Thank you.
Mr Paul I thank you for the info. You are full of wonderfull ideas I didnt think of.
I am just starting out and learning a great deal from you Sir.
Paul, I always learn so much from you. So very interesting. Thanks for taking the time to do this.
Thank You so much for taking the effort of filming, editing and sharing these fantastic videos.
instablaster
This is excellent stuff Paul. I really enjoyed it.
I've been researching lost foam casting for a while and wish I'd found your channel earlier. I've learned more here on this video than in a month of reading. I'm grateful to one of my subscribers who suggested I check you out.
Excellent work and terrific educational value. Thanks!!!
Thanks, if you don't mind I'd appreciate it if you could give me a shout out, I have many more videos planned but get a little disappointed preaching to a empty room.
Paul
Of course Paul. I'm a firm believer in giving credit where it's due : )
I think I can help you with the subs... Would you be interested in a collaboration sometime? Is so, please go here and drop me a line - www.vegoilguy.co.uk/contact_me.php - this will give me your email address without having to share it publicly. From there we can chat and maybe come up with a few ideas.
Hope to hear from you.
Geoff
@@vogman Hi..Could you pls tell me How to make ceramic core ?
Absolutely outstanding video Paul. I am going to have to watch this one a second time to pick up some of the finer points. Thank you so much for sharing your process with us.
Fred Ontario, NY
Excellent Paul. I hope you can continue to share your knowledge and experience here for many years to come.
Experience investment casting line since ether 12 press ,ripening, asmling, coating,, feeling,,, job chahiye,,,,,,,,,
Roverino Snarkman 08459314664,,,,,,,ganesh khade investment casting experience Mumbai maharrastra India,,,,,,,
That was a great, no-nonsense demo, Paul. Thanks for sharing. I had always wondered how the casting was separated from the investment. I assumed it was broken away, but I see now that it dissolves/fractures into the water as a powder. Very interesting. I learned several things about the process.
Currently this is the best channel on CZcams, I wish you started years ago.
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much thanks for putting this great amount of knowledge out there for everyone.
This was an excellent video tutorial! Thank you Paul Hamler.
Too many great tips and information to list!
thanks for sharing paul.we're fused silica sand and powder supplier,some new customer don't know how to use fused silica to make ceramic shell,I can share this with them.
Very informative and well done. Thank you. I look forward to seeing -- and learning from more of your videos.
Exceptional video.. if it's not solid gold it's certainly finely crafted German Silver... probably the best I've seen on the topic to date by a long shot. Thank you very much for passing down some of your wealth of knowledge to any who may have the will to make good use of it.
thanks
Thanks Paul. Like it all - Particularly the offset sprue.
Regards from John Spargo in Cape Town
Great video! Great information on the jewelers blade lubricant! Thanks so much!!!
Thanks for sharing your skills with us. There's a lot to learn here. Keep working.
This is a really great and thorough video covering the entire lost wax process. I wish the video quality was a tad better, but it's good enough to get all of the important points. Well done, Sir.
Thanks
I am nt undurstand howvacuum doing work
Thanks, Paul. Fascinating stuff.
Absolutely outstanding. Keep em coming.
Thank you for sharing your knowledge. Excellent video!
Clear & concise. Thank you Paul.
Thank you for going in depth!! Just learning, incredibly helpful!
Amazing video and VERY informative! I use centrifugal force with either hand sling or casting machine, thanks for posting!
God bless you SIR... WE need sincere people like YOU... To be around forever...
That is an excellent tip about the "Boelube"! Thanks for that tip!
Thank you for sharing! I learned a lot from this video!
Very interesting! Thanks for posting this video!
Thank you for showing the brand names and models of the tools you are using. After googling them, I found some awesome websites to help me get started.
Awesome video Paul thank you so much.
This is a great video!
Great video love the classic temperature reading tap tap pickup
Wow this video is exactly what I was looking for just subscribed!!!!!
Fascinating, looking forward to make an apprenticeship in the field!!!
What a nice instructional video. Thank you.
I subscribed - all new to this - I throughly enjoyed this informative video - THANK YOU !!
Tremendous amount of knowledge. Thank you so much. You sound kind of like a young Jimmy Stewart.
Great video thank you
I make very fine bronze castings for miniature furniture. I've got used to flashing when I enject my RTV moulds. To reduce that I've had to make the moulds way thicker than they need to be to avoid distortion. Your mould frames are a stroke of genius to solve this problem.. I don't have a vacuum unit so I debubble using my vibrating fretsaw table and tap the flasks with a stick until the investment is set. I also paint the waxes with investment beforehand to stop bubbles sticking to them.
One thing I discovered for incomplete wax castings is to cut a fine channel toward the back of the mould which allows the air to escape. As long as its smaller than the entrance hole it backs up the wax forcing it to fill the mould because its got knowhere else to go.. Great video and I can't wait to give those mould frames a go..
Check my other videos I think there’s one on making molds
@@paulhamler8315 Will do, thanks Paul..
old school skill. very clever
I would like to see one of your 1911s and miniature I believe that is fascinating great job
GREAT VIDEO !!!
wow !!! what an amazing video. thank you !
glad you enjoyed it
That was interesting I just got into green sand casting myself and I'm just taking a look at different things that you could do with a finer detail projects
So interesting. I would so like to do this type of work. Getting there slowly. Have two designs just about ready for casting, but sand casting not lost wax. So interesting.
Great video Paul, I took a jewelry class in High School and we used the same method as well the Centrifugal Force injection method. Thanks for the flash back. Keep up the good work.
thanks for sharing your information very help full .i need to make a wax pot like that. love to see inside how it works
1st I'd like to Thank you Mr Paul for your time making this video.
I ve tried to watch some people make these things and I would have to say you've done a Great Job.
All the information and video were awesome. I would like to ask, how do you put a rapper on the inside of your pvc pipe? I see you have a lathe and it makes me think how I could do this another way lol
You have a shop that many people Dream of Sir!!
GOD Bless! 😇
Offset compound 1 degree use a steady rest and a stiff boring bar. I'll send picture if I can locate.
i respect any one with the equipment they have experience
Thanks your video was very informative
Excellent, I'm getting ready to cast a chess set made of pure silver that I refined myself. The king will weigh in at between 6 to 8 troy ounces of pure silver. The pawns will be about 2 or 3 troy ounces each. I'll plate one side with gold on pure silver. You've done an excellent job of teaching a new comer some of the finer points, and most importantly, some of the things to avoid. You remind me of me!
funny u said 5 years ago ur a new comer... i watch ur vids. did u ever make the chess set?
1st time viewer, love it and thank you for being so DETAILED.
thanks
I liked it , there si a Lot of knowledge.
wow , thanks for sharing!!!!
At one point I produced a sprue cutting tool rather like an elongated hole saw that slipped down over the trunk of the "tree" and was powered by a drill motor. It's core was 7/16 diameter, so it would fit over a 3/8" central sprue with just a tad of clearance, and buzz of f the individual parts with their sprues still attached so they could then be cut off of their individual sprues with side cutters...no interference issues.
I made them from drill rod and hardened and tempered them individually, and those who bought them raved about them in the beginning, but I got distracted by other matters and never pursued them further. They may have been a total bust in later stages...who knows?
Anybody who wants to pursue them further, feel free to do so. I am turning 75 in a few weeks and am past the innovation stage......Joe
Good job
Thank you fore this Tutorial
Levy son you never quench any metal after casting . Break away the investment with a probe or a screw driver you can submerge the flask in water but only when it's cool enough that you can pick it up with your hands. I use the T shaped tool that tighten the blade on a Stihl edger . With the R & R or the Kerr investments or any that is used in this method of casting make sure when placing the rubber bowl on the pad to remove the air that it's trapped after mixing do not exceed ninety minutes . Usually you will see a rise and fall of the investment following by a bubbling effect that it's also known as boiling water effect . After transferring the investment to the flask allow excess tape or use a rubber sleeve above it's rim so as to the investments rise and fall does not over spill on the flask sides . After the rise and fall of the investment in the flask proceed to release the pressure immediately in the chamber pad . Do not boil the investment while in the flask for this will debilitate it . After at least four hours place the flask in the oven ( kiln) temperature not to exceed 1300 Fahrenheit . For if it does this will also debilitate the investment . I cast at 700 fahrenheit Gold and Silver and 500 heavy or solid pieces . I have never casted Aluminum using a vacuum caster but I would think that if in sand casting application the metal or wooden box mold that holds the pattern design in the clay sand is not heated , the perforated flask should too also be at room temperature after wax has been dissolve in the kiln . Did you look up Belmontmetals.com or Romanoff.com for your vacuum pump oil ? A good cast result is also achieved using virgin or refine metals ! Look up Riogrande.com or Gesswein.com these companies along with vacuum pump oil will have great finishing abrasives !
This video is amazing, thank you for taking the time to shoot, edit and upload it. It’s answered a lot of very specific questions that I haven’t been able to find elsewhere. I’ve been sandcasting non ferrous for a while now but have come up against the limitations of detail/undercuts etc. in smaller parts. Looking forward to trying some lost wax and nearly have all the gear up and running. A quick question if you don’t mind, what investment should I be looking to buy? Or what are good ratios for a shop made mix? There are a lot of conflicting opinions out there and it’s a struggle to know where to start. I’ll be pouring various bronzes. Any help is appreciated! Many thanks, Ollie Sparks.
Ollie, I'll respond on Instagrem
Very Neat. Their must be a lot of side work for your abilities. For Many parts not available any more. Event people who are working on projects who need parts made. Take Your Time & (most important) Be Safe.. Have a Great Day.
My flask comes out of my kiln glowing red - I think my temperature controller is messed up. 🤔
Its set to be a casting temp of 900f
Awsome video, thank you 👍
That was great. Excellent video. Very interesting.
Do the parts require machining or do you use them as they are?
Very little machining , a little grinding and sanding to remove the areas where the sprues were attached.. Go here hamlertools.smugmug.com/ and look at the folder on the wilton vise.
Thanks Paul. Is there a waiting list for your works? I would love to buy one!
Gracias maestro. ..porfabor que marca es su inyectora de cera. ..Gracias maestro
Hi. I learned something new today. What kind of mold investment powder are you using? Can you use cast iron or steel or platinum alloy for this kind of molds? Is there a lot of shrinkage? I know nothing about wax casting. I am interested in learning so I can produce my own products. After watching your video there is a lot of work to make a metal part. How much is it to build a couple of parts in steel alloy? Thank you.
Really usefull and informative video, thank you very much for sharing your knowledge with us!
P.S.
Your voice sounds incredibly similar to johnny cash's voice! O_O
Good video. That is an ingenious wax injector you have got there. Is there a way the wax can flow back into the pot, or does it just build up there on top and you put it back occasionally?
Thanks!
About 90 % flows back into the pot ,there is always some buildup around the stem . The buildup can be wiped away with your finger but it does not cause any problem.
Thanks for the time you took to answer. I see now. I guess the pressure tube has some sort of opening at the bottom, so that liquid wax may flow back into the pot.
Man that’s a lot of work, I walk up to my 3D printer poor the wax in the tray to the fill line and press start. Done
And what do you have when the 3d printer finishes????? probably a wax model . Have you ever made a wax model of a gun... it has to be converted to metal before it will function.
That's what the video was about... casting a wax model into metal. I'm confused on your comment pls explain.
Thanks
Paul
Awesome video! Thank you Johnny Cash, I mean Paul…(well, you kinda sound like him:)
Superb and valuable. This deserves a wider audience Paul. Suggest you add some keywords to the title "lost wax investment casting jewelry" Nothing like it from start to finish on youtube.
Not sure how to do that ...I welcome suggestions
Paul, just do a google search "How to retitle a youtube video" and take it from there. I guess you'd call this keyword spamming, using the youtube search engine to place you in front of searchers and subscribers to channels with those keyword interests. Example "Lot Wax investment casting for jewelers, artists, modelers, 3d makers" just an example.
Excellent video Paul. Very informative. How do you put the taper in the PVC?
Boring bar on the lathe
i would like to see how you scale down the parts used in the casting keep up your fine and interesting work i look forward to seeing your post
thank you
Richard Westerfield
Go here hamlertools.smugmug.com/ for details
Great video - would just like to add that the silica dust in investment is extremely dangerous when inhaled and a respirator mask should be worn while measuring & mixing it - also clean up with wet rags and dispose of it carefully.
Thank you for the great video packed with years of combined knowledge! One question: are you saying "flast"?
Flask
What a great video.
What is that mold powder called that you are using there ?
I'm 61 now and many years ago I thought about making gun parts this way but just didn't have the knowledge. Today I do some sand casting but I'm not very good at it. Stuff is usable but not pretty. Sand casting is definitely a skilled trade. I'm just a millwright.
I also make rubber molds and pour engine mounts and intake manifolds for my vintage atv's. Many of the parts for these mid 80's FL350's you can't get anymore from Honda so you have to make your own stuff. I use "Vitaflex 60" .
Great idea on those tapered mold boxes. Might have to make some of those on my lathe.
Thanks in advance for any replies.
It’s called 😜investment check Rio Grande . Com
Hi, did you put air escape vents in as part of the silicone mould at time of pouring or cut them after?
Cut them after
How does the vacuum take air out of the flask once the metal is poured? I don't see any vet holes. is the investment porous? Fascinating video. Thank you for posting it!
The investment is extremely porous, the vacuum creates a pressure differential and the atmospheric pressure pushes the metal into the flask, much like the atmospheric pressure is applied to the liquid when you suck through a straw and create a vacuum in your mouth.
Paul Hamler I have a quick question. If the investment is so porous how does the Metal not flow through it and get pulled into the vacuum?
@@brice2597 Viscosity and surface tension. Surface tension in particular is very strong.
Reinier Torres thanks for the reply, even though it’s been a year I was still curious
Thanks for the information and video. I was just wondering what does it cost to get into investment casting.
Check the Rio Grande catalog they have starter kits with most everything you would need. Depending on what you already have or buying used equipment you can save some.
Great video! I was wondering if the vacuum is absolutely necessary to the process, or if it can be done without it, I have been doing basic casting but wanted to try this, but I don't have one of those machines. Thanks!
Absolutely necessary ,it creates a pressure differential so the atmosphere forces the metal into the cavities to be filled. Other option is a centrifugal spinner that slings the molted metal into the flask , For larger flask I feel the vacuum is safer.I
Thank you!
Paul, well presented and informative. What brand of RTV clear rubber are you using and where can that be purchased? Thanks. Larry in CA.
Also forgot to ask if the RTV requires vacuuming to de-bubble before pouring into the mold flask?
Akron Two-Part RTV-RP Silicone Mold Rubber Compound .I buy from a local jewelry supplier,however Rio Grande.com has it.
Thanks Paul.
Awesome video thank you
مبدأ الفكره ممتازه جدا أنا أعمل هذا العمل بالمكنه طرد مركزى
I have found vacuum assist is safer and results equal to cectrifigual
Hi Paul. Brilliant video.
Where I live I can't seem to find any Investment Plaster. Is it okay to use Plaster Of Paris?
Also, do you think a plastic syringe could be used as a crude wax injector?
Thanks for your help.
No on using Plaster of Paris. Google Rio Grande for investment
The syringe probably wont work because the wax will cool and get solid without heat.
What time zone /country re you in ?
Thanks for replying Paul. I'm in the UK. Finding investment seems really tricky. I can find suppliers of large amounts but they cost a lot, especially with delivery. Some sites I've found actually sell Plaster Of Paris as an investment, but having seen your videos I wasn't so sure. I'm only an amateur on a budget and wanted to try this without breaking the bank : )
Try contacting company's like Kerr or Randolph and Ransom
they are pretty good about sending small samples
half plaster half fine white sand works fine (for me for casting bronze sculptures)
Question: Could the flask that had the top blow out be recovered by topping off the blown out investment and refiring? Have you ever tried that? The reason I ask, is that the interior would still contain viable molds that would be worth trying to recover if you have (like me) spent many hours modeling the wax originals. And thanks for posting this video - really great details and your insights are invaluable.
My first reaction is probably not, it would be quicker to use another wax and reinvest. A good reason why I make a silicon mold so I have an insurance.
If you don't have extra waxes the cured investment would have a difficult time bonding with the fresh investment.
he said "1911" when i saw the parts on their trees i recognized them, i didn't know anyone was making miniature Colt 1911's . i wonder where we can get a completed "1911" ?? i have a "Star" 1911 look-a-like and love it i can't afford a real full size 1911 but a miniature might be almost as good !!
I've been gathering kit to have a bash at this. There was a wax injector like yours on ebay for $295 plus $115 for shipping to the UK, not to mention the tax this end. Instead I bought a wax pot that the ladies use for 20 quid and a digital thermostat, thermocouple and solid state mains relay from the far east for another 12. The $64,000 questions are, please could you tell me what does the inside of your pump look like and what temperature does your wax pot work at?
John, the pot temperature range runs approximately between 100 F and 200F. 95 % of the injection waxes I use I set the temperature a 143 degrees. Best to error on lowest setting that will enter and fill the mold. I will be out of rhe shop for a few weeks recovering from surgery ,I'll explore the inners when I return to work.
Thanks. Really neat though... what does one of these cost?
Around 2500.00
Maybe I missed it but what is the capacity of you furnace?
13 inch by 13 inch by 9inch
What minimum separation distance would you recommend between the wax imprint and the flask botttom/top and walls?
based on the mass of the part I try 1/2 to 3/4 inch
@@paulhamler8315 Thanks Paul, I am very grateful for you sharing your knowledge on casting on youtube, instagram and your blog.
Hi Paul. Is that 1911 colt functional? (.22 cal)?
It has every part the full size gun has ,the scale is 2/5 or 40% scale. The bore is too small for a .22 thus you can't buy or use any standard off the shelf ammunition.
I've been looking and I can't find a price on one of your 1911s, I know because of the tooling and time it takes you they've got to be at least as expensive as a real one, would you mind giving me a ballpark price? Thanks
Ballpark $3000.00
Where can I get an injection pot like that? What is the brand, model number... What am I looking for? Great video. Subscribed.
Rio Grande should have them. they have a good web site you can browse and search (hand pump wax injector)a
Great video and very informative - I learned a lot. Just one question if I may.......the one that failed because there was not sufficient investment casting covering the molds. If a metal cap, perhaps a screw on cap had been put on the open of the cylinder end to give further support to the investment, would not this help prevent this sort of failure ?
Possibly but the easiest solution is paying attention to the clearance before pouring the investment which I did not do.
@@paulhamler8315 Hi Paul, thanks for your reply. Well at least you were not too proud to show a failure. The beauty of this is that it helps others learn from other peoples problems. Love the range of videos you have, so I will be watching these over the next week or so. Like you, I love working metal and wood, but unlike you I am a beginner. May I ask for details on that little furnace you have - is it and induction furnace ? I am in the UK and we have 240v supply here. All the ones I've seen craftsmen use have been small propane furnaces so far. I also now see the importance of de-gassing the investment - again something I have not seen mentioned before. I suppose it is important for small castings like those you made as a way to get trapped air out of the investment. Many thanks.
Chris Wood not an induction furnace regular ac .go to Rio grande.com search furnace
@@paulhamler8315 Thanks Paul. I live in the UK so we unfortunately have not go Rio Grande over here. But I have managed to source them from people who sell furnace gear in the UK. Cheers.
Very informative. Any chance of a video on the gear needed and process to do the internal tappers?
I’m not following you “internal tappers”. ????
@@paulhamler8315 on the pvc tube you say there is an internal taper of 1 -2 degrees to produce a snug fit and reduce flashing of the wax. I think you said in another comment you used a lathe and boring bar,,, would be great to see how this is done.
@@ianjinks4048 I'll try and post a few pictures and short video on hamlertools69.instagram soon
@@ianjinks4048 hamlertools.smugmug.com/Hobbies/Monarch-10EE/i-Pt2rskz/A
@@ianjinks4048 there are pictures in this link
Hello, like wow. That does take a lot of tools to do those jobs. Are those parts for a real working gun? No wonder that stuff gets costly eh?
Go to hamlertools.smugmug.com and look at the miniature 1911 folder
is this actually pulling a vacuum through the dried investment powder casting/flask? I feel like I'm missing something. I dont see how it gets a negative pressure in the cavity of the mold. please someone answer this for me., dumb question. But I see the investment being air tight?
jason clements It is like drinking a soda through a straw, you create a negative pressure in your mouth when sucking on the straw then the atmosphere pressure forces the liquid into your mouth
I just dont see the vacuum pulling a vacuum through the investment. I get it now. The investment cast is not air tight,
Jason after the investment has been through the burnout cycle the investment is very very porous and when placed in the vacuum chamber gravity enables the molten metal to flow into the cavities created by the lost wax that was in the initial state before being burnout. once the metal is in the flask which is in a vacuum chamber the atmosphere pushes the molted metal into every nook and cranny. This is the best I can explain it ...hope this helps.
Cant believe that flew over my head. lol subscribed and liked. Thank you.
Why do u put the investment into the vac. I'm confused about this step. So does the vac suck through the dense investment?
To remove air