Molding A Glass Lamp Shade - Part 1

[@susanloeb2340]

I am the Susan Robert mentioned in the video, and I can't wait to see the final outcome. I am amazed watching Robert's expertise and talent!

[@BoozyWoozy]

I wish you the best of luck getting what you wanted. Sensei can do anything.

[@user-el3xu5eh3g]

Totally awesome! Robert is awesome cuz of his work from heart & you are awesome cuz you are woman of goal & gets it done once mind is set upon. :)

[@spartantool3942]

Hi Susan Loeb, my name is Adam can you tell me how you got ahold of me Robert toloston? I would like to ask him about doing a project for me. Thanks

[@ArcticFlies56]

So we learn another technique. That’s what I love about your channel, week to week there’s always something new to learn. Mold making and resin pouring really allows you to use your imagination to solve new problems. It’s never a one size fits all. It’s like taking a cruise on the “Love Boat”, always a new surprise. Thank you Captain Bob!

[@RobertTolone]

Thanks Richard! As always I appreciate your comments.

[@danje748]

Glad to have you back to the normal schedule by the way. Not that the short once was bad, they where just short. ^^

[@BebawyGNB]

the master, waiting for part II

[@RobertTolone]

I will accept your compliment if you will accept my definition of a master: Someone who is aware of how little he or she knows and never stops learning.

[@BebawyGNB]

Let's make it a teacher instead, I'm learning a lot from you, thank you very much

[@carolsakai-artist]

Yes you are a Master. Amateurs have Dunning-Kruger effect - they think they know it all and don't know what they don't know. I absolutely love it when you make a "mistake" because you explain what happened, why it happens and then what you can do about it . . . this is true mastery

[@RobertTolone]

@@BebawyGNB Thanks George, it’s great to know that my videos are helpful.

[@BebawyGNB]

@@RobertTolone you are most welcome master 🌹❤🙂

[@MysticHeather]

That is a truly stunning Art Deco light fixture, I’d be desperate to have it restored as well

[@paulhayton3423]

All the best with this project Robert, if anyone can do it, it will be you!

[@markhills3922]

Talk about making a comeback video! WoW. This project is some serious craftsmanship. I never would of thought of using this technique but I guess that's why you're the master and I the apprentice. Good to have you back Robert

[@RobertTolone]

I’m happy to be back to full-length videos!

[@roger.agburn]

Nice that I was on vacation and can see part two right away. ;)

[@RobertTolone]

It is an epoxy gelcoat E-108gc from www.silpak.com. The laminating resin is E-108sp.

[@Napkinholdin]

I have a palm leaf lamp where each of the blades for all of the lamps have broken at the joint - I'm following along intently with this series to see what I can do to replace/repair my lamps! Love your work, absolutely mesmerizing to watch you work!

[@RobertTolone]

Glad my videos are helping. Let us know how it turns out.

[@templer4295]

I want to thank you for your channel. I find it very useful and right to the point. I am sure people ask you if you offer classes. I would gladly attend if you do? Please keep the videos coming if you don't!!

[@RobertTolone]

So glad you find my videos useful. Thanks for watching!

[@TheDarkArtist66]

Man, you are a master. I am blown away with how you just tackled this project and how effortless you made it look. This project would have had normal people sending themselves to the nut ward for a while lol. In all seriousness tho. Awesome job

[@maverickstclare3756]

great stuff. I bet it works better than the snow globe!

[@KristiSage]

Just found your channel searching how to make a silicone mold and now a follower! I am intrigued bye your methods and know I can learn a lot from watching you. Thank you!

[@zimot5965]

Glad to have your longer videos back! Thanks for another good one.

[@RobertTolone]

Very happy to be back on schedule!

[@tamsynmcnally8280]

Wow this is an amazing mould

[@dzzywibble7318]

A joy to watch as always! Thank you for all your hard work in making this video.

[@RobertTolone]

This one was definitely a challenge! Thanks for watching.

[@nathanielrobles3284]

Yes, I will come back for the resin pour!

[@RobertTolone]

Yeah, that’s where things get interesting…

[@user-el3xu5eh3g]

Truly love your work, channel and especially your explanation! Truly happy to have found you here! I will call you my first KZbin uncle :) Sending love from the other side of the world! Your work carried out by your genuine heart is just awesome!

[@glenfisher728]

Back with a vengeance Bob . Good to see you cracking out the oil clay . You didn't explain what a gel coat is and what it's used for. Love a complex mould !

[@RobertTolone]

It E-108gc from www.silpak.com. The laminating resin is E-108sp. The gelcoat covers the mold rubber better than just using laminating resin; it makes a cohesive surface. you can buy it in white and dye it colors so you don’t have to paint the finished casting.

[@RobertTolone]

You can do the complicated molds from now on Glen! I want to only do simple, easy ones! 😳😳😄

[@carolsakai-artist]

@@RobertTolone is there are similar product that can be easily obtained on the East coast?

[@RobertTolone]

@@carolsakai-artist Undoubtedly there are East coat fiberglass supply dealers who sell epoxy gel coats and laminating resins.

[@TheZahnputz]

hi, since you're a big fan of wax, you're going to love monster clay ("hard"). it would probably ease your feelings about such sculpted parting lines: you can cast it into sheets when hot; bend, drape and sculpt it when warm, sand it with gaze when cold and even "flame polish" with a heat gun. it would probably save you some time instead of using cardboard!

[@RobertTolone]

Monsterclay is excellent and I could have used it for this application.

[@sanzelizealaattinylmaz]

it was very nice

[@eternitybrooks9839]

just getting into mold making for minis myself and you channel is a god send! Thank you for doing what you do and i look forward to next weeks video on how to handle clear epoxy.

[@RobertTolone]

Glad you find my videos useful. Thanks!

[@debrajol3585]

Wow 😯 serious complex project. Love watching you make each step of this 🙌. Can’t wait to see what happens next week 😁

[@RobertTolone]

Thanks for watching! You’re in for a month of complex projects!

[@gremics-gallery]

Good stuff.

[@TheCrisdlc]

Thanks a million i learned a lot from your videos! It's inspiring to see someone that enjoys to care for details.... Can you kindly give me an advice on how to cast a cassette tape... I've tried but its super hard to get it right and i dont want to waste so much material

[@RobertTolone]

Hi Cris, are you trying to make a working cassette tape or like a prop facsimile?

[@TheCrisdlc]

@@RobertTolone im trying to make a working cassette tape that's the tricky part 🥴. Thanks for your reply!

[@RobertTolone]

@@TheCrisdlc Yeah, that would be difficult for two main reasons. First, injection molded parts are not designed to be resin cast. Injection molding and resin cast are very different processes and it’s often impossible to duplicate an injected part in resin. Second, even if you could cast the part, the final resin casting will be slightly smaller than the original cassette because of the unavoidable shrinkage in the mold and in the resin. So your cast parts will not fit with the other parts contained inside the cassette.

[@patprop74]

very interesting, I have to subscribe just to see what happens next.

[@dreroelandt2246]

thank you!! I have been trying to wrap my mind around 2 part blanket molds for a while!!

[@RobertTolone]

More blankets molds are coming up!

[@cerberus333dog]

as always, very useful information!

[@RobertTolone]

Thanks Perry!

[@securityrobot]

This video has given me a bit more confidence with finally using this technique. I never understood if you could or should reinforce the extra layers of silicone with fabric, or how to approach making the fibreglass jacket correctly, the mould release and gel coats have demystified the uncertainty. I have seen cases held together with bolts so I wonder if you will be making something like a flange that can be drilled to accommodate the bolts later, I shall stay tuned as they say.

[@RobertTolone]

I am not a fan of putting fabric reinforcement into silicone although a lot of people do it. I like to make my blankets thick enough to hold their shape inside the mother.

[@flytrapjohn]

This is brilliant. Thank you.

[@RobertTolone]

Thanks TP!

[@wollibar5263]

Another great project, thank you for sharing your wisdom with us - most interesting lesson

[@RobertTolone]

Thanks Wolli!

[@Tarex_]

Aluminum Tape (AC pipe tape) , can be smoothed against the part perfectly and basically doesn't stick to resin or silicone, can be backed up with cardboard, doesn't have to be

[@RobertTolone]

Good idea, I’ll have to try that out. Thanks!

[@NaF_Art_Studio]

what if we made a 3D printed shell ? Laser scan the object, and project a scaled up version with cavities to be filled with silicone ? would be interesting to utilize 3D printing with shell making n dumb pouring the whole thing

[@rocketsock4297]

You are a hero! Love it!!!

[@RobertTolone]

Thanks!

[@RobertTolone]

Thanks! I don’t actually feel very heroic. 🤪

[@minimaker5057]

Great work as always 🇩🇰👍🏻☺️

[@RobertTolone]

Thanks Mini!

[@karolinakiwicreations5738]

Johnsons floor paste works wonders for substituting as a parting agent :) as well as vaseline

[@RobertTolone]

Paste waxes I’m fine with. But I can’t abide greasy grimy vaseline as a mold release. Too much cleanup for me!

[@alexandrejuliaomachado9547]

Nice! 👏👏👏👏

[@annekabrimhall1059]

AMAZING!

[@RobertTolone]

Thanks Anneka! Someday we’ll go get hoagies!

[@annekabrimhall1059]

@@RobertTolone 😋

[@MadLabGadgets]

Great video! What is the black substance you use as a slash coat for the shell?

[@andy-in-indy]

A two part clayed up matrix mold to cast clear resin/epoxy without pressure - wow, that is a lot of work, even spread over 3-5 days (for this part). I am intrigued to see how this turns out, especially the finish on the interior of the part where you used the spray mold release. Is your plan to cast two or more copies so that she will have a matching set? I was expecting a support frame to keep the mold from curling in or out when you cast the final parts - is the fiberglass usually rigid enough to prevent that?

[@karolinakiwicreations5738]

I wan to thank you for this..i think this is going to work for my project ( the shark jaws)...

[@RobertTolone]

Let us know how it turns out!

[@nothanks2712]

how do you clean a brush after using it to paint silicone? I imagine that washing it off would be bad for whatever pipes it goes down and waiting for it to cure like you can do to clean mixing cups sounds like a bad idea on something with bristles

[@RobertTolone]

You can use acetone but I usually don't bother. I use cheap disposable brushes and budget them into the cost of the mold.

[@lalucoo]

What are all the different waxes you use? That would be an informative tool video :D Is sticky wax any generic hard wax? Whats the difference in the maroon colored wax you used for the funnel and are the blue sticks wax too?

[@RobertTolone]

Good idea for a video!

[@garybuder4645]

Thoughts on using expanding spray foam to build the shelf at the top of the piece?

[@RobertTolone]

Expanding foam makes excellent mold shells. I usually reserve foam for a large molds, like life-size human sculptures.

[@IdRatherBeMaking]

Back to clear resin! At least it's not a rotomold. :D

[@RobertTolone]

😀😀😀

[@BoozyWoozy]

Hello sense, Do you think using a vibrating table when casting a mold can help clean casting?

[@RobertTolone]

very early in my career I built a vibrating table for molds but I never had very much luck with it.

[@carolsakai-artist]

I checked through your materials list and didn't see a listing for the gel coat that you used - please provide. Is this a polyester resin+fiberglass fabric combination that is similar to that used for latex mother molds for casting concrete?

[@RobertTolone]

It is an epoxy gelcoat E-108gc from www.silpak.com. The laminating resin is E-108sp.

[@BoozyWoozy]

Hello sensei, it's me again. Please advise. The situation is as follows - you need to cast a certain number of housings for electronics. Of course, the best method would be injection molding into metal molds. But it is very expensive and not suitable for small series production. I thought it would be worth trying silicone molding. But what composition to use? Probably, this should be close in properties to ABS plastic. At the same time, is not very expensive. Advise what to look for.

[@RobertTolone]

I really don’t know which resins that are available to you would closely mimic the qualities of ABS. I would refer that question to resin suppliers in your area. Usually the biggest challenge in resin casting injection molded parts is that the parts were not designed for resin casting. The two processes are very different from one another and have different requirements. If you are copying an existing housing you may have to modify it to be able to cast it successfully in resin. If you are designing the housing you can optimize it for the resin casting process.

[@BoozyWoozy]

@@RobertTolone Thanks. but I was just talking about that injection molding is not available to me. I was going to use good old gravity. Thanks. but I was just talking about that injection molding is not available to me. I was going to use good old gravity. I design the body of the lantern. It will be simplified as much as possible. To avoid bubbles, it will be split into several pieces.

[@carolsakai-artist]

Question: 1) why do you not use thickening agents for silicone (thixotropic or cabosil fumed silica to thicken the silicone mold material), 2) why do you not use vaseline as a mold release agent?

[@glenfisher728]

Why add a thixotrope to the rtv when you can keep it as simple as possible by getting one ready to go. If you use a spray release it gives an even coat especially if you get it on the pattern , if Vaseline is not applied properly you can get brush strokes and uneven coatings.

[@carolsakai-artist]

@@glenfisher728 I don't understand the first sentence, does. . . "one ready to go" imply that you have to have two separate silicone products on hand 1) a more liquid silicone for a face coat, and 2) a separate silicone rubber that is thicker and more brushable? I am an artist looking to do this inexpensively and spray release is significantly more expensive than vaseline

[@glenfisher728]

@@carolsakai-artist rtv is thickened chemically not physically . So yes , generally two types of silicone are needed. They need to be the same type , tin or platinum based to stick to each other. Yes , I used Vaseline for years because it is cheaper but a spray on release agent will give a better more even coverage . Vaseline is good to use it just takes more time and care to apply and it's best not to get it on the master pattern.

[@carolsakai-artist]

@@glenfisher728 Thanks for the explaining between chemical and physical - however I have made silicone molds with cabosil or polyfiber, and they seemed to work ok. I now realize there is a difference in techniques chosen between those who want commercial production and artists who only need very limited production (such as for bronze casting, or very limited edition). For artist who only need a few copies, time is now so important, but often money is - there is a yin/yang balance between the two.

[@glenfisher728]

Again it depends what you're casting in to the rtv. If it's a quick set polyurethane I think you might have problems with physical fillers. If it's plaster you might get better results. Cost is a major factor , it's a good idea to look around at prices. The local moulding/casting supply shop near me had a vacuum chamber and pump for AUD 450 but on eBay the same unit cost AUD 150 delivered. If you're just doing a few castings the cheaper stuff will do but if you want many castings you've got to pay the money . What type of product are you casting in to the rtv ?

[@dspiffy]

I need 2 of these replicated. Are you willing to do it for hire, or suggestions of how to find someone in my area? Thanks!

[@RobertTolone]

I’m only doing channel projects these days. Google is the best way I know of to locate the products and services I use.

[@dspiffy]

@@RobertTolone to be honest I don't even know where to begin with a Google search. The entire project is above my capabilities right now, I would love to hire someone to do it

[@crudominiatures]

I cant wait to see the result... XD

[@karolinakiwicreations5738]

What was your gelcoar ratio? resin to powder?

[@RobertTolone]

Something odd like 16.5 to 100.

[@karolinakiwicreations5738]

@@RobertTolone so about a handful of cabosil?

[@karolinakiwicreations5738]

also how many layers of cloth?

[@RobertTolone]

5

[@RodgersA51]

You can run from the clear roto casting Robert, but you can't hide forever...

[@RobertTolone]

Just when I thought I was out, they pull me back in!

[@ellecampbell5067]

How does one contact you for a job?

[@shywatcher1961]

smash that like button

[@RobertTolone]

Right!

[@danje748]

Why do they call the spots "holidays"? Is it because nothing is there, it is away on holiday?

[@RobertTolone]

Because each spot is where the resin went on holiday! No, I did not make that up!

[@danje748]

@@RobertTolone hehe so my guess was correct, I did not see that one coming =)

[@chartle1]

Assuming it will never match so I would replace them all.

[@LimabeanStudios]

This was my first thought. Clear resin usually yellows too.

[@glenfisher728]

Use a UV stable clear resin to stop it yellowing .

[@RobertTolone]

Oh, so you doubt my abilities Cliff? You are wise.

[@chartle1]

@@RobertTolone I await this Friday's result. But may not not see it until Tuesday. Depends on how good the wifi is at the KOA in Ohio. 👍

[@chartle1]

@@RobertTolone oh I think 100% bubble free cast will be a major a achievement. Or do you have some new magic resin from one of your new sponsors. 👍

[@kainoctis7724]

If it doesnt match, can just replace em all with resin 😂

[@RobertTolone]

Let's hope it matches!