Hi Guys, I decided to add some pictures I took last summer to my folder. Now you get to see the infamous woodburner in action. Cheers, John...
37584
integerspin
halfintegerspin
Mar 22, 2007 12:51 pm
I am making a pattern. It's a wooden pattern. I wondered what people use to put logos or lettering on them? -- thanks richard...
37585
Rupert Wenig
rwenig1
Mar 22, 2007 1:28 pm
Hello Richard, Special lettering can be bought. There is a video cd with a process to make lettering and logos out of resin available. I think the author is ...
37586
Malcolm Parker-Lisberg
mparkerlisberg
Mar 22, 2007 1:36 pm
Most people use a Dymo label machine or front door letters and numbers from the hardware shop. ... ...
37587
Lyle
creepinogie
Mar 22, 2007 2:00 pm
You can buy cheap plastic letters from sign suppliers that are used for those signs you see in restaurants where they push the letters into the feltboard. You...
37588
William Abernathy
Yahuselah
Mar 22, 2007 5:41 pm
I say wear eye protection and a good layer of leather and give it a shot with your boy out of the room. http://en.wikipedia.org/wiki/Plasticine says "Although...
37589
Dave
odd_kins
Mar 22, 2007 7:06 pm
I use a dymo labeler for small lettering, for large lettering I made a mold with backward letters cut into it and make bondo letters. For logos, 3 to 4 (about...
37590
rexarino
Mar 23, 2007 2:01 am
Thanks William! No way will my son leave the room. He has his own facemask and leathers for blacksmithing, and he loves hot metal more than I do. He's also...
37591
Lyle
creepinogie
Mar 23, 2007 2:04 am
I think most of it'll melt off leaving just a reside which will burn off. I se a heat gun alot on plastic modeling caly and I know for use it'll melt. LL ... ...
37592
rexarino
Mar 23, 2007 2:07 am
Thanks Lyle! I've seen beetles (successful) and butterflys (not successful) cast in silver. I've seen wood, bone, cuttlefish, seeds, many kinds of wax, ...
37593
rexarino
Mar 23, 2007 2:34 am
Now this is the reason to ask a question on this group! The combined experience exceeds any single text or advice one could hope to find. The clay nearly melts...
37594
Daniel C Postellon
dpostellon
Mar 24, 2007 2:25 pm
"long chain alphatic acids(principally stearic acid" is probably lard or talow, or lard or tallow with the glycerine removed. I wonder if you could make this...
37595
mtierneyr5gt
Mar 26, 2007 4:25 pm
is brass bar good for casting? is a small vent preferable to a large one and am i better off using a sprue extension for more feed?...
37596
Lyle
creepinogie
Mar 26, 2007 7:05 pm
Not enough info to answer. What grade of brass? Usually bar (aamco 18?) isn't. What is the size and shape of the casting? How are you gating it? What sort of...
37597
mtierneyr5gt
Mar 26, 2007 7:33 pm
hi!casting should be 8"x 6"x1/2" with a three inch cope,ceramic filter in riser(1"deep)with 2 short(1")gates,bars are for machining--- ... using...
37598
Lyle
creepinogie
Mar 26, 2007 8:46 pm
You won't need any sprue extension. And if your sandcasting you won't need any vents. What is it? A plaque? What kind of brass are you using? LL ... --...
37599
David Patterson
odd_kins
Mar 26, 2007 9:48 pm
3" cope will work with no extension you don't need a filter in the riser you may want one in the down sprue or in the runnner. You may want a single riser in...
37600
JoCo
jocovo2000
Mar 27, 2007 3:18 am
I've been injection molding plastics at home for some time now. My intention is to make very very small gears (12 tooth 0.07" diameter) in brass. I can cast...
37601
David Patterson
odd_kins
Mar 27, 2007 4:27 am
Try this stuff I've machined it to .030 thick( turbine blade) and it remains stable. http://www.freemansupply.com/MachinableWax.htm JoCo <jocovo@...>...
37602
Shiney Paper
engraveman2000
Mar 27, 2007 5:04 am
Plastic can be a problem in investment casting. The expansion of plastic is usually a lot more than wax and will sometime crack your investment during the...
37603
JoCo
jocovo2000
Mar 27, 2007 1:44 pm
Yes I have injected molded it but the teeth break off upon part removal (even with mold release). The "width" of a single tooth of the involute gear is about...
37604
JoCo
jocovo2000
Mar 27, 2007 1:45 pm
None of us really have the luxury of time being mortals. =( Thanks for the input! I've been searching a bit but can't find any of the plastics you mention. Do...
37605
Daniel C Postellon
dpostellon
Mar 27, 2007 9:53 pm
Look up Ray-vin for a rook (chess piece) with an internal spiral staircase....
37606
kryzwel
Mar 30, 2007 9:21 pm
Hello all. Was wondering if there is a formula to determine the size needed for gates and risers? I am doing lost wax bronze casting in a plaster investment....
37607
Dan Brewer
danqualman
Mar 31, 2007 12:11 am
Look in the files section under Dan in Auburn. I posted a paper that explains how to gate and why you do it that way. Dan in Auburn _____ From:...
37608
kryzwel
Mar 31, 2007 2:37 am
Extremely useful information! This is excellent! Thank you, thank you, thank you. This is exactly what I was looking for. -Joel Dan Brewer...
37609
John Greer
john16314
Mar 31, 2007 9:55 pm
Greetings, New to this group and I might as well show how little I know right from the start. I'm in the process of restoring/customizing an old british...
37610
Dave
odd_kins
Apr 1, 2007 1:20 am
If you already have the molding sand, make a wood pattern it will be easer in the long run, if your first casting were to fail. Added benefit of a wood pattern...
37611
Daniel C Postellon
dpostellon
Apr 1, 2007 2:48 am
You need expanded polstyrene foam, not polyuethane. The white stuff that they make picnic coolers from. You can vent it, but don't need a two-piece mold....
37612
Dan Brewer
danqualman
Apr 1, 2007 5:13 am
John, You will be disappointed by hoe the metal performs if you use aluminum wire. Aluminum wire is almost pure aluminum. It does not like to be cast. I...
